Finding the Fourth Proportional to 82,739.68, 124,139.59 and 40,615.32

Step by Step Solution

1. Step 1: Write the proportion equation
   82,739.68 : 124,139.59 = 40,615.32 : x
2. Step 2: Convert to fraction form
   82,739.68/124,139.59 = 40,615.32/x
3. Step 3: Cross multiply
   82,739.68x = 124,139.59 × 40,615.32
4. Step 4: Simplify right side
   82,739.68x = 5,041,969,536.50
5. Step 5: Solve for x
   x = 5,041,969,536.50/82,739.68
6. Step 6: Final answer
   x = 60,937.75