Finding the Fourth Proportional to 82,688.85, 123,934.82 and 57,593.07

Step by Step Solution

1. Step 1: Write the proportion equation
   82,688.85 : 123,934.82 = 57,593.07 : x
2. Step 2: Convert to fraction form
   82,688.85/123,934.82 = 57,593.07/x
3. Step 3: Cross multiply
   82,688.85x = 123,934.82 × 57,593.07
4. Step 4: Simplify right side
   82,688.85x = 7,137,786,475.73
5. Step 5: Solve for x
   x = 7,137,786,475.73/82,688.85
6. Step 6: Final answer
   x = 86,321.03