Finding the Fourth Proportional to 111.00, 153.25 and 71.68

Step by Step Solution

1. Step 1: Write the proportion equation
   111.00 : 153.25 = 71.68 : x
2. Step 2: Convert to fraction form
   111.00/153.25 = 71.68/x
3. Step 3: Cross multiply
   111.00x = 153.25 × 71.68
4. Step 4: Simplify right side
   111.00x = 10,984.01
5. Step 5: Solve for x
   x = 10,984.01/111.00
6. Step 6: Final answer
   x = 98.96