Finding the Fourth Proportional to 82,487.43, 113,884.25 and 56,690.42

Step by Step Solution

1. Step 1: Write the proportion equation
   82,487.43 : 113,884.25 = 56,690.42 : x
2. Step 2: Convert to fraction form
   82,487.43/113,884.25 = 56,690.42/x
3. Step 3: Cross multiply
   82,487.43x = 113,884.25 × 56,690.42
4. Step 4: Simplify right side
   82,487.43x = 6,456,145,111.01
5. Step 5: Solve for x
   x = 6,456,145,111.01/82,487.43
6. Step 6: Final answer
   x = 78,268.23