Finding the Fourth Proportional to 120,177.72, 165,845.72 and 65,730.96

Step by Step Solution

1. Step 1: Write the proportion equation
   120,177.72 : 165,845.72 = 65,730.96 : x
2. Step 2: Convert to fraction form
   120,177.72/165,845.72 = 65,730.96/x
3. Step 3: Cross multiply
   120,177.72x = 165,845.72 × 65,730.96
4. Step 4: Simplify right side
   120,177.72x = 10,901,198,387.49
5. Step 5: Solve for x
   x = 10,901,198,387.49/120,177.72
6. Step 6: Final answer
   x = 90,708.98