Finding the Fourth Proportional to 158,522.33, 218,774.61 and 86,916

Step by Step Solution

1. Step 1: Write the proportion equation
   158,522.33 : 218,774.61 = 86,916 : x
2. Step 2: Convert to fraction form
   158,522.33/218,774.61 = 86,916/x
3. Step 3: Cross multiply
   158,522.33x = 218,774.61 × 86,916
4. Step 4: Simplify right side
   158,522.33x = 19,015,014,002.76
5. Step 5: Solve for x
   x = 19,015,014,002.76/158,522.33
6. Step 6: Final answer
   x = 119,951.65