Finding the Fourth Proportional to 158,081.70, 218,139.50 and 89,167.36

Step by Step Solution

1. Step 1: Write the proportion equation
   158,081.70 : 218,139.50 = 89,167.36 : x
2. Step 2: Convert to fraction form
   158,081.70/218,139.50 = 89,167.36/x
3. Step 3: Cross multiply
   158,081.70x = 218,139.50 × 89,167.36
4. Step 4: Simplify right side
   158,081.70x = 19,450,923,326.72
5. Step 5: Solve for x
   x = 19,450,923,326.72/158,081.70
6. Step 6: Final answer
   x = 123,043.49