Finding the Fourth Proportional to 111.00, 153.12 and 66.69

Step by Step Solution

1. Step 1: Write the proportion equation
   111.00 : 153.12 = 66.69 : x
2. Step 2: Convert to fraction form
   111.00/153.12 = 66.69/x
3. Step 3: Cross multiply
   111.00x = 153.12 × 66.69
4. Step 4: Simplify right side
   111.00x = 10,211.82
5. Step 5: Solve for x
   x = 10,211.82/111.00
6. Step 6: Final answer
   x = 92.00