Finding the Fourth Proportional to 67.72, 101.46 and 49.60

Step by Step Solution

1. Step 1: Write the proportion equation
   67.72 : 101.46 = 49.60 : x
2. Step 2: Convert to fraction form
   67.72/101.46 = 49.60/x
3. Step 3: Cross multiply
   67.72x = 101.46 × 49.60
4. Step 4: Simplify right side
   67.72x = 5,032.42
5. Step 5: Solve for x
   x = 5,032.42/67.72
6. Step 6: Final answer
   x = 74.31