Finding the Fourth Proportional to 82,689.85, 123,936.31 and 57,594.07

Step by Step Solution

1. Step 1: Write the proportion equation
   82,689.85 : 123,936.31 = 57,594.07 : x
2. Step 2: Convert to fraction form
   82,689.85/123,936.31 = 57,594.07/x
3. Step 3: Cross multiply
   82,689.85x = 123,936.31 × 57,594.07
4. Step 4: Simplify right side
   82,689.85x = 7,137,996,513.68
5. Step 5: Solve for x
   x = 7,137,996,513.68/82,689.85
6. Step 6: Final answer
   x = 86,322.52