Finding the Fourth Proportional to 119,881.20, 165,436.38 and 65,433.86

Step by Step Solution

1. Step 1: Write the proportion equation
   119,881.20 : 165,436.38 = 65,433.86 : x
2. Step 2: Convert to fraction form
   119,881.20/165,436.38 = 65,433.86/x
3. Step 3: Cross multiply
   119,881.20x = 165,436.38 × 65,433.86
4. Step 4: Simplify right side
   119,881.20x = 10,825,140,100.64
5. Step 5: Solve for x
   x = 10,825,140,100.64/119,881.20
6. Step 6: Final answer
   x = 90,298.90