Finding the Fourth Proportional to 74.72, 103.25 and 54.06

Step by Step Solution

1. Step 1: Write the proportion equation
   74.72 : 103.25 = 54.06 : x
2. Step 2: Convert to fraction form
   74.72/103.25 = 54.06/x
3. Step 3: Cross multiply
   74.72x = 103.25 × 54.06
4. Step 4: Simplify right side
   74.72x = 5,581.42
5. Step 5: Solve for x
   x = 5,581.42/74.72
6. Step 6: Final answer
   x = 74.70