Finding the Fourth Proportional to 82,501.29, 123,542.61 and 69,139.15

Step by Step Solution

1. Step 1: Write the proportion equation
   82,501.29 : 123,542.61 = 69,139.15 : x
2. Step 2: Convert to fraction form
   82,501.29/123,542.61 = 69,139.15/x
3. Step 3: Cross multiply
   82,501.29x = 123,542.61 × 69,139.15
4. Step 4: Simplify right side
   82,501.29x = 8,541,630,476.05
5. Step 5: Solve for x
   x = 8,541,630,476.05/82,501.29
6. Step 6: Final answer
   x = 103,533.30