Finding the Fourth Proportional to 89,688.50, 123,745.50 and 62,434.04

Step by Step Solution

1. Step 1: Write the proportion equation
   89,688.50 : 123,745.50 = 62,434.04 : x
2. Step 2: Convert to fraction form
   89,688.50/123,745.50 = 62,434.04/x
3. Step 3: Cross multiply
   89,688.50x = 123,745.50 × 62,434.04
4. Step 4: Simplify right side
   89,688.50x = 7,725,931,806.18
5. Step 5: Solve for x
   x = 7,725,931,806.18/89,688.50
6. Step 6: Final answer
   x = 86,141.84