Finding the Fourth Proportional to 82,366.93, 123,255.15 and 71,311.78

Step by Step Solution

1. Step 1: Write the proportion equation
   82,366.93 : 123,255.15 = 71,311.78 : x
2. Step 2: Convert to fraction form
   82,366.93/123,255.15 = 71,311.78/x
3. Step 3: Cross multiply
   82,366.93x = 123,255.15 × 71,311.78
4. Step 4: Simplify right side
   82,366.93x = 8,789,544,140.67
5. Step 5: Solve for x
   x = 8,789,544,140.67/82,366.93
6. Step 6: Final answer
   x = 106,712.05