Finding the Fourth Proportional to 82,689.60, 123,935.94 and 57,593.82

Step by Step Solution

1. Step 1: Write the proportion equation
   82,689.60 : 123,935.94 = 57,593.82 : x
2. Step 2: Convert to fraction form
   82,689.60/123,935.94 = 57,593.82/x
3. Step 3: Cross multiply
   82,689.60x = 123,935.94 × 57,593.82
4. Step 4: Simplify right side
   82,689.60x = 7,137,944,219.89
5. Step 5: Solve for x
   x = 7,137,944,219.89/82,689.60
6. Step 6: Final answer
   x = 86,322.15