Finding the Fourth Proportional to 99,116.17, 136,893.83 and 65,275.92

Step by Step Solution

1. Step 1: Write the proportion equation
   99,116.17 : 136,893.83 = 65,275.92 : x
2. Step 2: Convert to fraction form
   99,116.17/136,893.83 = 65,275.92/x
3. Step 3: Cross multiply
   99,116.17x = 136,893.83 × 65,275.92
4. Step 4: Simplify right side
   99,116.17x = 8,935,870,369.19
5. Step 5: Solve for x
   x = 8,935,870,369.19/99,116.17
6. Step 6: Final answer
   x = 90,155.53