Set up a ranked game with a friend or a boosting partner. Make sure that they are a higher rank than you. Rank is based off of the leaderbords not the player rank. Once you are in the game have the person with a higher rank declare bankruptcy and the achievement will unlock at the end of the game.
If your friend is a higher rank than you make a ranked match and you declare bankruptcy until your friend has a higher rank. It may take a few attempts to get it so that they are a higher rank but it will count for the Taking Over The World achievement.
You can check you rank by going into Play on Xbox Live option. Then select leaderboards. Look at your overall rank and not the large number in the middle of the card.