Finding the Fourth Proportional to 88.00, 131.92 and 42.39

Step by Step Solution

1. Step 1: Write the proportion equation
   88.00 : 131.92 = 42.39 : x
2. Step 2: Convert to fraction form
   88.00/131.92 = 42.39/x
3. Step 3: Cross multiply
   88.00x = 131.92 × 42.39
4. Step 4: Simplify right side
   88.00x = 5,591.98
5. Step 5: Solve for x
   x = 5,591.98/88.00
6. Step 6: Final answer
   x = 63.55