Finding the Fourth Proportional to 105.50, 158.22 and 88.39

Step by Step Solution

1. Step 1: Write the proportion equation
   105.50 : 158.22 = 88.39 : x
2. Step 2: Convert to fraction form
   105.50/158.22 = 88.39/x
3. Step 3: Cross multiply
   105.50x = 158.22 × 88.39
4. Step 4: Simplify right side
   105.50x = 13,984.89
5. Step 5: Solve for x
   x = 13,984.89/105.50
6. Step 6: Final answer
   x = 132.56