Finding the Fourth Proportional to 43.32, 64.56 and 42.24

Step by Step Solution

1. Step 1: Write the proportion equation
   43.32 : 64.56 = 42.24 : x
2. Step 2: Convert to fraction form
   43.32/64.56 = 42.24/x
3. Step 3: Cross multiply
   43.32x = 64.56 × 42.24
4. Step 4: Simplify right side
   43.32x = 2,727.01
5. Step 5: Solve for x
   x = 2,727.01/43.32
6. Step 6: Final answer
   x = 62.95