Finding the Fourth Proportional to 89,689.50, 123,746.88 and 62,435.04

Step by Step Solution

1. Step 1: Write the proportion equation
   89,689.50 : 123,746.88 = 62,435.04 : x
2. Step 2: Convert to fraction form
   89,689.50/123,746.88 = 62,435.04/x
3. Step 3: Cross multiply
   89,689.50x = 123,746.88 × 62,435.04
4. Step 4: Simplify right side
   89,689.50x = 7,726,141,402.68
5. Step 5: Solve for x
   x = 7,726,141,402.68/89,689.50
6. Step 6: Final answer
   x = 86,143.21