Finding the Fourth Proportional to 88.61, 132.83 and 42.94

Step by Step Solution

1. Step 1: Write the proportion equation
   88.61 : 132.83 = 42.94 : x
2. Step 2: Convert to fraction form
   88.61/132.83 = 42.94/x
3. Step 3: Cross multiply
   88.61x = 132.83 × 42.94
4. Step 4: Simplify right side
   88.61x = 5,703.72
5. Step 5: Solve for x
   x = 5,703.72/88.61
6. Step 6: Final answer
   x = 64.37