Finding the Fourth Proportional to 119,969.64, 165,553.59 and 65,520

Step by Step Solution

1. Step 1: Write the proportion equation
   119,969.64 : 165,553.59 = 65,520 : x
2. Step 2: Convert to fraction form
   119,969.64/165,553.59 = 65,520/x
3. Step 3: Cross multiply
   119,969.64x = 165,553.59 × 65,520
4. Step 4: Simplify right side
   119,969.64x = 10,847,071,216.80
5. Step 5: Solve for x
   x = 10,847,071,216.80/119,969.64
6. Step 6: Final answer
   x = 90,415.14