TIME MACHINE PROBLEM:

DURING THE LATE 1950'S, THERE WAS A SCIENCE FICTION STORY ABOUT A MAN WHO WAS BUILDING A TIME MACHINE AND NEEDED $50,000 TO COMPLETE IT. HE ONLY HAD $4750. HIS PARTIALLY COMPLETED MACHINE WOULD TRAVEL ONLY TEN YEARS INTO THE PAST AND BACK, AND HE WANTED TO FINISH IT. THE TIME WAS 1958, AND SAVINGS ACCOUNTS BETWEEN 1948 AND 1958 PAID 4%.

HOW DID HE MANAGE TO FINISH THE PROJECT?