Finding the Fourth Proportional to 158,425.05, 218,626.25 and 86,807.37

Step by Step Solution

1. Step 1: Write the proportion equation
   158,425.05 : 218,626.25 = 86,807.37 : x
2. Step 2: Convert to fraction form
   158,425.05/218,626.25 = 86,807.37/x
3. Step 3: Cross multiply
   158,425.05x = 218,626.25 × 86,807.37
4. Step 4: Simplify right side
   158,425.05x = 18,978,369,341.43
5. Step 5: Solve for x
   x = 18,978,369,341.43/158,425.05
6. Step 6: Final answer
   x = 119,793.99