Finding the Fourth Proportional to 111.28, 153.57 and 67.00

Step by Step Solution

1. Step 1: Write the proportion equation
   111.28 : 153.57 = 67.00 : x
2. Step 2: Convert to fraction form
   111.28/153.57 = 67.00/x
3. Step 3: Cross multiply
   111.28x = 153.57 × 67.00
4. Step 4: Simplify right side
   111.28x = 10,288.42
5. Step 5: Solve for x
   x = 10,288.42/111.28
6. Step 6: Final answer
   x = 92.46