Finding the Fourth Proportional to 158,550.89, 218,797.71 and 86,931.50

Step by Step Solution

1. Step 1: Write the proportion equation
   158,550.89 : 218,797.71 = 86,931.50 : x
2. Step 2: Convert to fraction form
   158,550.89/218,797.71 = 86,931.50/x
3. Step 3: Cross multiply
   158,550.89x = 218,797.71 × 86,931.50
4. Step 4: Simplify right side
   158,550.89x = 19,020,411,706.88
5. Step 5: Solve for x
   x = 19,020,411,706.88/158,550.89
6. Step 6: Final answer
   x = 119,964.08