Finding the Fourth Proportional to 99,124.50, 136,701.06 and 65,119.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,124.50 : 136,701.06 = 65,119.50 : x
2. Step 2: Convert to fraction form
   99,124.50/136,701.06 = 65,119.50/x
3. Step 3: Cross multiply
   99,124.50x = 136,701.06 × 65,119.50
4. Step 4: Simplify right side
   99,124.50x = 8,901,904,676.67
5. Step 5: Solve for x
   x = 8,901,904,676.67/99,124.50
6. Step 6: Final answer
   x = 89,805.29