Finding the Fourth Proportional to 158,500.53, 218,738.07 and 86,886

Step by Step Solution

1. Step 1: Write the proportion equation
   158,500.53 : 218,738.07 = 86,886 : x
2. Step 2: Convert to fraction form
   158,500.53/218,738.07 = 86,886/x
3. Step 3: Cross multiply
   158,500.53x = 218,738.07 × 86,886
4. Step 4: Simplify right side
   158,500.53x = 19,005,275,950.02
5. Step 5: Solve for x
   x = 19,005,275,950.02/158,500.53
6. Step 6: Final answer
   x = 119,906.70