Finding the Fourth Proportional to 111.25, 153.43 and 67.56

Step by Step Solution

1. Step 1: Write the proportion equation
   111.25 : 153.43 = 67.56 : x
2. Step 2: Convert to fraction form
   111.25/153.43 = 67.56/x
3. Step 3: Cross multiply
   111.25x = 153.43 × 67.56
4. Step 4: Simplify right side
   111.25x = 10,365.73
5. Step 5: Solve for x
   x = 10,365.73/111.25
6. Step 6: Final answer
   x = 93.18