Finding the Fourth Proportional to 105.89, 158.42 and 88.67

Step by Step Solution

1. Step 1: Write the proportion equation
   105.89 : 158.42 = 88.67 : x
2. Step 2: Convert to fraction form
   105.89/158.42 = 88.67/x
3. Step 3: Cross multiply
   105.89x = 158.42 × 88.67
4. Step 4: Simplify right side
   105.89x = 14,046.66
5. Step 5: Solve for x
   x = 14,046.66/105.89
6. Step 6: Final answer
   x = 132.65