Finding the Fourth Proportional to 119,653.79, 165,123.32 and 65,940.72

Step by Step Solution

1. Step 1: Write the proportion equation
   119,653.79 : 165,123.32 = 65,940.72 : x
2. Step 2: Convert to fraction form
   119,653.79/165,123.32 = 65,940.72/x
3. Step 3: Cross multiply
   119,653.79x = 165,123.32 × 65,940.72
4. Step 4: Simplify right side
   119,653.79x = 10,888,350,279.89
5. Step 5: Solve for x
   x = 10,888,350,279.89/119,653.79
6. Step 6: Final answer
   x = 90,998.80