Hearing ... I'm a musically oriented person, and I use sound to diagnose various equipment or mechanical errors ... and find talking on the phone to people I haven't seen in a while quite evocative...
But if I have touch, then I can still pick up vibrations. I can feel my phone go off with a text message. I can still pick up the thrum of my engine through the steering wheel or bars (and pedals, and seat...), or just touch it ... maybe with a glove. I can make up glasses with a rather basic little pulsing EQ thing so I can pick up on loud noises I may not otherwise feel.
OK, the "hearing your way around a corner" thing kind of goes, I wouldn't get someone calling for help or trying to page me on the site walkie talkie, shouting a warning, etc, but I think we'd get by. If you have sight and touch you can muddle through without.
Besides I use earplugs for enough things. And it's high time I learned to sign and lipread, as I've been meaning to for years. Almost all visual media comes with captions ... well except youtube. But damn if google don't come up with an automatic captioner in the next couple years, along with their translator.
But damn would I have a hard time getting used to a loss of either olfactory sense, and they're about as vital for avoiding danger. I've spat out unexpectedly "off" food before, smelt something burning before I could see or hear it...
Second choice would be .... oooh now you're asking. Vision - as you can get devices that basically give you human sonar these days, from basic clickers upto fancy things that present a synthesised version of a camera feed (you may not get enough to drive with, even if you're highly synaesthesic, but walking around unaided wouldn't be out of the question), screen readers (and text message readers!) and the like? Smell, as I could then at least still get the taste clues that something's bad (misplaced sourness, bitterness, even sweetness...)? Taste, because if you're ultra careful with your food and are sure no-one's going to posion it/you won't accidentally try to drink antifreeze at some point it wouldn't actually be that necessary?
Touch would be a hard one. You'd become the most clumsy person in the world. And you can still get by without vision or sound, in a way, if you can feel your way through.