Finding the Fourth Proportional to 119,651.78, 165,120.55 and 65,938.72

Step by Step Solution

1. Step 1: Write the proportion equation
   119,651.78 : 165,120.55 = 65,938.72 : x
2. Step 2: Convert to fraction form
   119,651.78/165,120.55 = 65,938.72/x
3. Step 3: Cross multiply
   119,651.78x = 165,120.55 × 65,938.72
4. Step 4: Simplify right side
   119,651.78x = 10,887,837,712.70
5. Step 5: Solve for x
   x = 10,887,837,712.70/119,651.78
6. Step 6: Final answer
   x = 90,996.04