Finding the Fourth Proportional to 88.31, 132.46 and 42.69

Step by Step Solution

1. Step 1: Write the proportion equation
   88.31 : 132.46 = 42.69 : x
2. Step 2: Convert to fraction form
   88.31/132.46 = 42.69/x
3. Step 3: Cross multiply
   88.31x = 132.46 × 42.69
4. Step 4: Simplify right side
   88.31x = 5,654.72
5. Step 5: Solve for x
   x = 5,654.72/88.31
6. Step 6: Final answer
   x = 64.03