Finding the Fourth Proportional to 123,109.89, 169,862.71 and 74,710.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123,109.89 : 169,862.71 = 74,710.72 : x
2. Step 2: Convert to fraction form
   123,109.89/169,862.71 = 74,710.72/x
3. Step 3: Cross multiply
   123,109.89x = 169,862.71 × 74,710.72
4. Step 4: Simplify right side
   123,109.89x = 12,690,565,365.25
5. Step 5: Solve for x
   x = 12,690,565,365.25/123,109.89
6. Step 6: Final answer
   x = 103,083.23