Finding the Fourth Proportional to 74.72, 103.02 and 50.09

Step by Step Solution

1. Step 1: Write the proportion equation
   74.72 : 103.02 = 50.09 : x
2. Step 2: Convert to fraction form
   74.72/103.02 = 50.09/x
3. Step 3: Cross multiply
   74.72x = 103.02 × 50.09
4. Step 4: Simplify right side
   74.72x = 5,160.27
5. Step 5: Solve for x
   x = 5,160.27/74.72
6. Step 6: Final answer
   x = 69.06