Finding the Fourth Proportional to 111.13, 153.33 and 71.27

Step by Step Solution

1. Step 1: Write the proportion equation
   111.13 : 153.33 = 71.27 : x
2. Step 2: Convert to fraction form
   111.13/153.33 = 71.27/x
3. Step 3: Cross multiply
   111.13x = 153.33 × 71.27
4. Step 4: Simplify right side
   111.13x = 10,927.06
5. Step 5: Solve for x
   x = 10,927.06/111.13
6. Step 6: Final answer
   x = 98.33