Finding the Fourth Proportional to 158,542.05, 218,789.82 and 90,568.02

Step by Step Solution

1. Step 1: Write the proportion equation
   158,542.05 : 218,789.82 = 90,568.02 : x
2. Step 2: Convert to fraction form
   158,542.05/218,789.82 = 90,568.02/x
3. Step 3: Cross multiply
   158,542.05x = 218,789.82 × 90,568.02
4. Step 4: Simplify right side
   158,542.05x = 19,815,360,793.56
5. Step 5: Solve for x
   x = 19,815,360,793.56/158,542.05
6. Step 6: Final answer
   x = 124,984.89