Finding the Fourth Proportional to 158,123.64, 218,208.82 and 86,502.83

Step by Step Solution

1. Step 1: Write the proportion equation
   158,123.64 : 218,208.82 = 86,502.83 : x
2. Step 2: Convert to fraction form
   158,123.64/218,208.82 = 86,502.83/x
3. Step 3: Cross multiply
   158,123.64x = 218,208.82 × 86,502.83
4. Step 4: Simplify right side
   158,123.64x = 18,875,680,028.45
5. Step 5: Solve for x
   x = 18,875,680,028.45/158,123.64
6. Step 6: Final answer
   x = 119,372.92