Finding the Fourth Proportional to 82,731.90, 124,149.15 and 43,317.30

Step by Step Solution

1. Step 1: Write the proportion equation
   82,731.90 : 124,149.15 = 43,317.30 : x
2. Step 2: Convert to fraction form
   82,731.90/124,149.15 = 43,317.30/x
3. Step 3: Cross multiply
   82,731.90x = 124,149.15 × 43,317.30
4. Step 4: Simplify right side
   82,731.90x = 5,377,805,975.30
5. Step 5: Solve for x
   x = 5,377,805,975.30/82,731.90
6. Step 6: Final answer
   x = 65,002.81