Finding the Fourth Proportional to 105.56, 158.32 and 88.55

Step by Step Solution

1. Step 1: Write the proportion equation
   105.56 : 158.32 = 88.55 : x
2. Step 2: Convert to fraction form
   105.56/158.32 = 88.55/x
3. Step 3: Cross multiply
   105.56x = 158.32 × 88.55
4. Step 4: Simplify right side
   105.56x = 14,018.00
5. Step 5: Solve for x
   x = 14,018.00/105.56
6. Step 6: Final answer
   x = 132.80