Finding the Fourth Proportional to 88.38, 132.53 and 42.73

Step by Step Solution

1. Step 1: Write the proportion equation
   88.38 : 132.53 = 42.73 : x
2. Step 2: Convert to fraction form
   88.38/132.53 = 42.73/x
3. Step 3: Cross multiply
   88.38x = 132.53 × 42.73
4. Step 4: Simplify right side
   88.38x = 5,662.46
5. Step 5: Solve for x
   x = 5,662.46/88.38
6. Step 6: Final answer
   x = 64.07