Finding the Fourth Proportional to 40.72, 61.18 and 34.69

Step by Step Solution

1. Step 1: Write the proportion equation
   40.72 : 61.18 = 34.69 : x
2. Step 2: Convert to fraction form
   40.72/61.18 = 34.69/x
3. Step 3: Cross multiply
   40.72x = 61.18 × 34.69
4. Step 4: Simplify right side
   40.72x = 2,122.33
5. Step 5: Solve for x
   x = 2,122.33/40.72
6. Step 6: Final answer
   x = 52.12