How do I figure out the retained earnings?

40,300 27,200 44,500 112,000 $ MIAMI MUSIC CORPORATION Balance Sheet At January 31 Assets Cash $ Accounts Receivable Supplies Total Assets Liabilities Accounts Payable $ Total Liabilities Stockholders' Equity Common Stock Retained Earnings Total Stockholders' Equity Total Liabilities and Stockholders' Equity $ 14,300 14,300 40,100 0 X 40,100 54,400 $