Finding the Fourth Proportional to 111.78, 154.27 and 67.53

Step by Step Solution

1. Step 1: Write the proportion equation
   111.78 : 154.27 = 67.53 : x
2. Step 2: Convert to fraction form
   111.78/154.27 = 67.53/x
3. Step 3: Cross multiply
   111.78x = 154.27 × 67.53
4. Step 4: Simplify right side
   111.78x = 10,418.52
5. Step 5: Solve for x
   x = 10,418.52/111.78
6. Step 6: Final answer
   x = 93.21