Finding the Fourth Proportional to 82,689.92, 114,072 and 49,132.16

Step by Step Solution

1. Step 1: Write the proportion equation
   82,689.92 : 114,072 = 49,132.16 : x
2. Step 2: Convert to fraction form
   82,689.92/114,072 = 49,132.16/x
3. Step 3: Cross multiply
   82,689.92x = 114,072 × 49,132.16
4. Step 4: Simplify right side
   82,689.92x = 5,604,603,755.52
5. Step 5: Solve for x
   x = 5,604,603,755.52/82,689.92
6. Step 6: Final answer
   x = 67,778.56