Compare the numbers digit by digit, starting from the ten-thousands place.

Ten-thousands digits: 6, 6, 6, 6. Numbers with the same ten-thousands digit are further compared at the thousands, hundreds, tens, and ones places.

From largest to smallest:
• 67429 (greatest)
• 67294
• 64729
• 64279 (smallest)

Final Answer: 67429, 67294, 64729, 64279