Finding the Fourth Proportional to 88.54, 132.72 and 42.82

Step by Step Solution

1. Step 1: Write the proportion equation
   88.54 : 132.72 = 42.82 : x
2. Step 2: Convert to fraction form
   88.54/132.72 = 42.82/x
3. Step 3: Cross multiply
   88.54x = 132.72 × 42.82
4. Step 4: Simplify right side
   88.54x = 5,683.07
5. Step 5: Solve for x
   x = 5,683.07/88.54
6. Step 6: Final answer
   x = 64.19