Finding the Fourth Proportional to 82,860.72, 124,201.56 and 40,691.76

Step by Step Solution

1. Step 1: Write the proportion equation
   82,860.72 : 124,201.56 = 40,691.76 : x
2. Step 2: Convert to fraction form
   82,860.72/124,201.56 = 40,691.76/x
3. Step 3: Cross multiply
   82,860.72x = 124,201.56 × 40,691.76
4. Step 4: Simplify right side
   82,860.72x = 5,053,980,071.15
5. Step 5: Solve for x
   x = 5,053,980,071.15/82,860.72
6. Step 6: Final answer
   x = 60,993.68