Finding the Fourth Proportional to 158,969.49, 239,022.45 and 146,642.10

Step by Step Solution

1. Step 1: Write the proportion equation
   158,969.49 : 239,022.45 = 146,642.10 : x
2. Step 2: Convert to fraction form
   158,969.49/239,022.45 = 146,642.10/x
3. Step 3: Cross multiply
   158,969.49x = 239,022.45 × 146,642.10
4. Step 4: Simplify right side
   158,969.49x = 35,050,754,015.15
5. Step 5: Solve for x
   x = 35,050,754,015.15/158,969.49
6. Step 6: Final answer
   x = 220,487.30