Compare the numbers digit by digit, starting from the ten-thousands place.<br><br>Ten-thousands digits: 4, 4, 4, 4. Numbers with the same ten-thousands digit are further compared at the thousands, hundreds, tens, and ones places.<br><br>From largest to smallest:<br>&bull; 47521 (greatest)<br>&bull; 47215<br>&bull; 45712<br>&bull; 45217 (smallest)<br><br>Final Answer: 47521, 47215, 45712, 45217