Finding the Fourth Proportional to 103,687.52, 143,132.92 and 69,715.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,687.52 : 143,132.92 = 69,715.72 : x
2. Step 2: Convert to fraction form
   103,687.52/143,132.92 = 69,715.72/x
3. Step 3: Cross multiply
   103,687.52x = 143,132.92 × 69,715.72
4. Step 4: Simplify right side
   103,687.52x = 9,978,614,573.50
5. Step 5: Solve for x
   x = 9,978,614,573.50/103,687.52
6. Step 6: Final answer
   x = 96,237.37