Finding the Fourth Proportional to 119,657.78, 165,128.84 and 65,944.72

Step by Step Solution

1. Step 1: Write the proportion equation
   119,657.78 : 165,128.84 = 65,944.72 : x
2. Step 2: Convert to fraction form
   119,657.78/165,128.84 = 65,944.72/x
3. Step 3: Cross multiply
   119,657.78x = 165,128.84 × 65,944.72
4. Step 4: Simplify right side
   119,657.78x = 10,889,375,117.72
5. Step 5: Solve for x
   x = 10,889,375,117.72/119,657.78
6. Step 6: Final answer
   x = 91,004.32