Finding the Fourth Proportional to 82,708.26, 123,127.04 and 82,216.18

Step by Step Solution

1. Step 1: Write the proportion equation
   82,708.26 : 123,127.04 = 82,216.18 : x
2. Step 2: Convert to fraction form
   82,708.26/123,127.04 = 82,216.18/x
3. Step 3: Cross multiply
   82,708.26x = 123,127.04 × 82,216.18
4. Step 4: Simplify right side
   82,708.26x = 10,123,034,780.49
5. Step 5: Solve for x
   x = 10,123,034,780.49/82,708.26
6. Step 6: Final answer
   x = 122,394.49