Finding the Fourth Proportional to 82,402.91, 113,724.49 and 50,139.87

Step by Step Solution

1. Step 1: Write the proportion equation
   82,402.91 : 113,724.49 = 50,139.87 : x
2. Step 2: Convert to fraction form
   82,402.91/113,724.49 = 50,139.87/x
3. Step 3: Cross multiply
   82,402.91x = 113,724.49 × 50,139.87
4. Step 4: Simplify right side
   82,402.91x = 5,702,131,144.42
5. Step 5: Solve for x
   x = 5,702,131,144.42/82,402.91
6. Step 6: Final answer
   x = 69,198.18