Finding the Fourth Proportional to 110.72, 152.75 and 71.42

Step by Step Solution

1. Step 1: Write the proportion equation
   110.72 : 152.75 = 71.42 : x
2. Step 2: Convert to fraction form
   110.72/152.75 = 71.42/x
3. Step 3: Cross multiply
   110.72x = 152.75 × 71.42
4. Step 4: Simplify right side
   110.72x = 10,908.28
5. Step 5: Solve for x
   x = 10,908.28/110.72
6. Step 6: Final answer
   x = 98.53