Finding the Fourth Proportional to 88.05, 132.12 and 42.38

Step by Step Solution

1. Step 1: Write the proportion equation
   88.05 : 132.12 = 42.38 : x
2. Step 2: Convert to fraction form
   88.05/132.12 = 42.38/x
3. Step 3: Cross multiply
   88.05x = 132.12 × 42.38
4. Step 4: Simplify right side
   88.05x = 5,598.59
5. Step 5: Solve for x
   x = 5,598.59/88.05
6. Step 6: Final answer
   x = 63.58