Finding the Fourth Proportional to 111.82, 154.27 and 88.51

Step by Step Solution

1. Step 1: Write the proportion equation
   111.82 : 154.27 = 88.51 : x
2. Step 2: Convert to fraction form
   111.82/154.27 = 88.51/x
3. Step 3: Cross multiply
   111.82x = 154.27 × 88.51
4. Step 4: Simplify right side
   111.82x = 13,653.22
5. Step 5: Solve for x
   x = 13,653.22/111.82
6. Step 6: Final answer
   x = 122.11