Finding the Fourth Proportional to 88.55, 132.72 and 42.83

Step by Step Solution

1. Step 1: Write the proportion equation
   88.55 : 132.72 = 42.83 : x
2. Step 2: Convert to fraction form
   88.55/132.72 = 42.83/x
3. Step 3: Cross multiply
   88.55x = 132.72 × 42.83
4. Step 4: Simplify right side
   88.55x = 5,683.73
5. Step 5: Solve for x
   x = 5,683.73/88.55
6. Step 6: Final answer
   x = 64.19