Finding the Fourth Proportional to 158,610.42, 218,882.52 and 86,991.84

Step by Step Solution

1. Step 1: Write the proportion equation
   158,610.42 : 218,882.52 = 86,991.84 : x
2. Step 2: Convert to fraction form
   158,610.42/218,882.52 = 86,991.84/x
3. Step 3: Cross multiply
   158,610.42x = 218,882.52 × 86,991.84
4. Step 4: Simplify right side
   158,610.42x = 19,040,993,158.64
5. Step 5: Solve for x
   x = 19,040,993,158.64/158,610.42
6. Step 6: Final answer
   x = 120,048.82