Finding the Fourth Proportional to 158,123.61, 218,215.76 and 86,501.97

Step by Step Solution

1. Step 1: Write the proportion equation
   158,123.61 : 218,215.76 = 86,501.97 : x
2. Step 2: Convert to fraction form
   158,123.61/218,215.76 = 86,501.97/x
3. Step 3: Cross multiply
   158,123.61x = 218,215.76 × 86,501.97
4. Step 4: Simplify right side
   158,123.61x = 18,876,092,692.54
5. Step 5: Solve for x
   x = 18,876,092,692.54/158,123.61
6. Step 6: Final answer
   x = 119,375.55