Finding the Fourth Proportional to 73.72, 110.33 and 50.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73.72 : 110.33 = 50.72 : x
2. Step 2: Convert to fraction form
   73.72/110.33 = 50.72/x
3. Step 3: Cross multiply
   73.72x = 110.33 × 50.72
4. Step 4: Simplify right side
   73.72x = 5,595.68
5. Step 5: Solve for x
   x = 5,595.68/73.72
6. Step 6: Final answer
   x = 75.91