The PS3 and Xbox 360 have a solid chance of getting over 50 million sold, but even if everything goes perfectly for them I think they'll still end up closer to that than a hundred.
The Wii on the other hand is a real wild card. Breaking 100 million is very likely, and it might even do it twice if they manage to expand the gaming audience enough, and have a longer lifespan than usual due to graphics ceasing to matter as much etc.







