471 is bigger than 468.
468 is a lower number than 471. If it is lower, then it is not the biggest.
468 is close to 471, but it is not more than it.
Look at them both just with their second number. 060 and 070. 6 is lower than 7, and 7 is bigger than 6, meaning that the answer is 471. If you were looking for the lower number, it would be 468.