What is the world record for most money in monopoly?

i had $63,000 because my friend, my sister and me played for like 2 weeks and that was the amount i came out with when we decided to end the game because they way we played you could go into the negatives and both of the had about $-30,000 because they kept landing on my board walk and i had 4 hotels on it and if you landed on it you had to pay $16,000 so i dominated that game! :D