Finding the Fourth Proportional to 42.32, 63.42 and 22.05

Step by Step Solution

1. Step 1: Write the proportion equation
   42.32 : 63.42 = 22.05 : x
2. Step 2: Convert to fraction form
   42.32/63.42 = 22.05/x
3. Step 3: Cross multiply
   42.32x = 63.42 × 22.05
4. Step 4: Simplify right side
   42.32x = 1,398.41
5. Step 5: Solve for x
   x = 1,398.41/42.32
6. Step 6: Final answer
   x = 33.05