Finding the Fourth Proportional to 119,580.67, 165,017.91 and 65,131.62

Step by Step Solution

1. Step 1: Write the proportion equation
   119,580.67 : 165,017.91 = 65,131.62 : x
2. Step 2: Convert to fraction form
   119,580.67/165,017.91 = 65,131.62/x
3. Step 3: Cross multiply
   119,580.67x = 165,017.91 × 65,131.62
4. Step 4: Simplify right side
   119,580.67x = 10,747,883,807.31
5. Step 5: Solve for x
   x = 10,747,883,807.31/119,580.67
6. Step 6: Final answer
   x = 89,879.78