Finding the Fourth Proportional to 111.34, 153.59 and 92.56

Step by Step Solution

1. Step 1: Write the proportion equation
   111.34 : 153.59 = 92.56 : x
2. Step 2: Convert to fraction form
   111.34/153.59 = 92.56/x
3. Step 3: Cross multiply
   111.34x = 153.59 × 92.56
4. Step 4: Simplify right side
   111.34x = 14,215.83
5. Step 5: Solve for x
   x = 14,215.83/111.34
6. Step 6: Final answer
   x = 127.68