Finding the Fourth Proportional to 88.39, 132.52 and 42.76

Step by Step Solution

1. Step 1: Write the proportion equation
   88.39 : 132.52 = 42.76 : x
2. Step 2: Convert to fraction form
   88.39/132.52 = 42.76/x
3. Step 3: Cross multiply
   88.39x = 132.52 × 42.76
4. Step 4: Simplify right side
   88.39x = 5,666.56
5. Step 5: Solve for x
   x = 5,666.56/88.39
6. Step 6: Final answer
   x = 64.11