Finding the Fourth Proportional to 88, 131.92 and 42.42

Step by Step Solution

1. Step 1: Write the proportion equation
   88 : 131.92 = 42.42 : x
2. Step 2: Convert to fraction form
   88/131.92 = 42.42/x
3. Step 3: Cross multiply
   88x = 131.92 × 42.42
4. Step 4: Simplify right side
   88x = 5,596.05
5. Step 5: Solve for x
   x = 5,596.05/88
6. Step 6: Final answer
   x = 63.59