How much would it cost to eradicate hunger?

I regret sounding so negative; hunger cannot be eradicated no matter the cost. There is no way that enough people and resources could come together to do this. Not only that, we are at the point where the only result of our mismanagement of earth's resources will be horrendous and widespread famine. It may not happen for the next 3 or 4 decades, but it is coming.