Finding the Fourth Proportional to 99,162.08, 136,749.88 and 65,110.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,162.08 : 136,749.88 = 65,110.50 : x
2. Step 2: Convert to fraction form
   99,162.08/136,749.88 = 65,110.50/x
3. Step 3: Cross multiply
   99,162.08x = 136,749.88 × 65,110.50
4. Step 4: Simplify right side
   99,162.08x = 8,903,853,061.74
5. Step 5: Solve for x
   x = 8,903,853,061.74/99,162.08
6. Step 6: Final answer
   x = 89,790.91