Finding the Fourth Proportional to 74.34, 111.42 and 50.25

Step by Step Solution

1. Step 1: Write the proportion equation
   74.34 : 111.42 = 50.25 : x
2. Step 2: Convert to fraction form
   74.34/111.42 = 50.25/x
3. Step 3: Cross multiply
   74.34x = 111.42 × 50.25
4. Step 4: Simplify right side
   74.34x = 5,598.86
5. Step 5: Solve for x
   x = 5,598.86/74.34
6. Step 6: Final answer
   x = 75.31