As starry diadem has suggested, document every single tiny thing with times (e.g. how long you spent picking up his errors) to the minute, so it's easy to see how much time he's wasting. Type it up into a spreadsheet or something and print it off. Take this to the supervisors, and if it's clear that, despite so much of the company's time and money being wasted by this guy, they just don't care, go higher up.
Try to adopt an attitude of, "This is a problem which is bad for all of us, and how can we all find a way to fix it?" rather than a kind of, "This is a problem, you fix it." If they aren't the most effective managers around, then they may respond to this by seeing you as the problem instead (I've known a lot of people who view those who point out problems as the problems themselves--they'd rather just not know). Hopefully someone else here can suggest some good phrases to use.