Finding the Fourth Proportional to 88.60, 132.89 and 42.93

Step by Step Solution

1. Step 1: Write the proportion equation
   88.60 : 132.89 = 42.93 : x
2. Step 2: Convert to fraction form
   88.60/132.89 = 42.93/x
3. Step 3: Cross multiply
   88.60x = 132.89 × 42.93
4. Step 4: Simplify right side
   88.60x = 5,705.25
5. Step 5: Solve for x
   x = 5,705.25/88.60
6. Step 6: Final answer
   x = 64.40