Finding the Fourth Proportional to 120,177.32, 165,839.69 and 65,728.62

Step by Step Solution

1. Step 1: Write the proportion equation
   120,177.32 : 165,839.69 = 65,728.62 : x
2. Step 2: Convert to fraction form
   120,177.32/165,839.69 = 65,728.62/x
3. Step 3: Cross multiply
   120,177.32x = 165,839.69 × 65,728.62
4. Step 4: Simplify right side
   120,177.32x = 10,900,413,636.28
5. Step 5: Solve for x
   x = 10,900,413,636.28/120,177.32
6. Step 6: Final answer
   x = 90,702.76