Finding the Fourth Proportional to 119,643.30, 165,105.81 and 65,196.18

Step by Step Solution

1. Step 1: Write the proportion equation
   119,643.30 : 165,105.81 = 65,196.18 : x
2. Step 2: Convert to fraction form
   119,643.30/165,105.81 = 65,196.18/x
3. Step 3: Cross multiply
   119,643.30x = 165,105.81 × 65,196.18
4. Step 4: Simplify right side
   119,643.30x = 10,764,268,107.81
5. Step 5: Solve for x
   x = 10,764,268,107.81/119,643.30
6. Step 6: Final answer
   x = 89,969.67