Finding the Fourth Proportional to 119,777.92, 165,308.88 and 99,600.10

Step by Step Solution

1. Step 1: Write the proportion equation
   119,777.92 : 165,308.88 = 99,600.10 : x
2. Step 2: Convert to fraction form
   119,777.92/165,308.88 = 99,600.10/x
3. Step 3: Cross multiply
   119,777.92x = 165,308.88 × 99,600.10
4. Step 4: Simplify right side
   119,777.92x = 16,464,780,978.89
5. Step 5: Solve for x
   x = 16,464,780,978.89/119,777.92
6. Step 6: Final answer
   x = 137,460.90