We should not think of poverty eradication as a matter of collecting money and giving it to the poor so much as of reforming the global rules that are disadvantaging the poor and making it impossible for them to fend for themselves.
The bottom quarter of the human population has only three-quarters of one percent of global household income, about one thirty-second of the average income in the world, whereas the people in the top five percent have nine times the average income. So the ratio between the averages in the top five percent and the bottom quarter is somewhere around 300 to one - a huge inequality that also gives you a sense of how easily poverty could be avoided.