Finding the Fourth Proportional to 111.44, 153.71 and 72.08

Step by Step Solution

1. Step 1: Write the proportion equation
   111.44 : 153.71 = 72.08 : x
2. Step 2: Convert to fraction form
   111.44/153.71 = 72.08/x
3. Step 3: Cross multiply
   111.44x = 153.71 × 72.08
4. Step 4: Simplify right side
   111.44x = 11,079.42
5. Step 5: Solve for x
   x = 11,079.42/111.44
6. Step 6: Final answer
   x = 99.42