Finding the Fourth Proportional to 158,559.50, 218,792.06 and 86,920.67

Step by Step Solution

1. Step 1: Write the proportion equation
   158,559.50 : 218,792.06 = 86,920.67 : x
2. Step 2: Convert to fraction form
   158,559.50/218,792.06 = 86,920.67/x
3. Step 3: Cross multiply
   158,559.50x = 218,792.06 × 86,920.67
4. Step 4: Simplify right side
   158,559.50x = 19,017,552,445.88
5. Step 5: Solve for x
   x = 19,017,552,445.88/158,559.50
6. Step 6: Final answer
   x = 119,939.53