Consecutive even numbers differ by 2. The average is the middle value.<br><br>&bull; For 4 numbers, the average lies between the 2nd and 3rd number.<br>&bull; Average = 105, so the 2nd number is 104 and 3rd is 106.<br>&bull; The 4 numbers are: 102, 104, 106, 108<br>&bull; Smallest number = 102<br><br>&bull; Check: Sum = 102 + 104 + 106 + 108 = 420<br>&bull; Average = 420 ÷ 4 = 105. ✓<br><br>Final Answer: 102