Yes, you would get 4x the EVs for Pokerus and Macho Brace.
The problem with the Exp. Share part though, is that you can't physically see the EVs being calculated, so it's hard to judge by. My guess would be no, though (Don't quote me on this though, I'm not an expert with EVs and IVs), seeing as the Pokemon inheriting the Experience form the Exp. Share wouldn't have any form of EV multipliers on it.
If it had Pokerus as well, you'd get a 2x boost, but I'm stumped on the Macho Brace part...