Finding the Fourth Proportional to 123,643.52, 185,502.24 and 87,689.24

Step by Step Solution

1. Step 1: Write the proportion equation
   123,643.52 : 185,502.24 = 87,689.24 : x
2. Step 2: Convert to fraction form
   123,643.52/185,502.24 = 87,689.24/x
3. Step 3: Cross multiply
   123,643.52x = 185,502.24 × 87,689.24
4. Step 4: Simplify right side
   123,643.52x = 16,266,550,443.90
5. Step 5: Solve for x
   x = 16,266,550,443.90/123,643.52
6. Step 6: Final answer
   x = 131,560.07