Finding the Fourth Proportional to 88.06, 132.15 and 42.42

Step by Step Solution

1. Step 1: Write the proportion equation
   88.06 : 132.15 = 42.42 : x
2. Step 2: Convert to fraction form
   88.06/132.15 = 42.42/x
3. Step 3: Cross multiply
   88.06x = 132.15 × 42.42
4. Step 4: Simplify right side
   88.06x = 5,605.80
5. Step 5: Solve for x
   x = 5,605.80/88.06
6. Step 6: Final answer
   x = 63.66