Compare the digits from left to right.

All numbers have 5 digits. Compare the ten-thousands: all are 7.
Compare the thousands: 4, 0, 0, 4.
• The numbers with thousands digit 0 are smaller. Among 70275 and 70428: thousands both 0, hundreds: 2 < 4, so 70275 is smallest, then 70428.
• Among 74024 and 74210: thousands both 4, hundreds: 0 < 2, so 74024 comes next, then 74210.

Final Answer: 70275, 70428, 74024, 74210