Finding the Fourth Proportional to 111.41, 153.72 and 82.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111.41 : 153.72 = 82.25 : x
2. Step 2: Convert to fraction form
   111.41/153.72 = 82.25/x
3. Step 3: Cross multiply
   111.41x = 153.72 × 82.25
4. Step 4: Simplify right side
   111.41x = 12,643.47
5. Step 5: Solve for x
   x = 12,643.47/111.41
6. Step 6: Final answer
   x = 113.49