Finding the Fourth Proportional to 82,515.27, 123,815.12 and 39,287.13

Step by Step Solution

1. Step 1: Write the proportion equation
   82,515.27 : 123,815.12 = 39,287.13 : x
2. Step 2: Convert to fraction form
   82,515.27/123,815.12 = 39,287.13/x
3. Step 3: Cross multiply
   82,515.27x = 123,815.12 × 39,287.13
4. Step 4: Simplify right side
   82,515.27x = 4,864,340,751.12
5. Step 5: Solve for x
   x = 4,864,340,751.12/82,515.27
6. Step 6: Final answer
   x = 58,950.79