Finding the Fourth Proportional to 42.72, 59.04 and 34.08

Step by Step Solution

1. Step 1: Write the proportion equation
   42.72 : 59.04 = 34.08 : x
2. Step 2: Convert to fraction form
   42.72/59.04 = 34.08/x
3. Step 3: Cross multiply
   42.72x = 59.04 × 34.08
4. Step 4: Simplify right side
   42.72x = 2,012.08
5. Step 5: Solve for x
   x = 2,012.08/42.72
6. Step 6: Final answer
   x = 47.10