Finding the Fourth Proportional to 82,689.91, 123,936.45 and 57,594.08

Step by Step Solution

1. Step 1: Write the proportion equation
   82,689.91 : 123,936.45 = 57,594.08 : x
2. Step 2: Convert to fraction form
   82,689.91/123,936.45 = 57,594.08/x
3. Step 3: Cross multiply
   82,689.91x = 123,936.45 × 57,594.08
4. Step 4: Simplify right side
   82,689.91x = 7,138,005,528.25
5. Step 5: Solve for x
   x = 7,138,005,528.25/82,689.91
6. Step 6: Final answer
   x = 86,322.58