Finding the Fourth Proportional to 158,049.48, 218,112.07 and 90,065

Step by Step Solution

1. Step 1: Write the proportion equation
   158,049.48 : 218,112.07 = 90,065 : x
2. Step 2: Convert to fraction form
   158,049.48/218,112.07 = 90,065/x
3. Step 3: Cross multiply
   158,049.48x = 218,112.07 × 90,065
4. Step 4: Simplify right side
   158,049.48x = 19,644,263,584.55
5. Step 5: Solve for x
   x = 19,644,263,584.55/158,049.48
6. Step 6: Final answer
   x = 124,291.86