Finding the Fourth Proportional to 111.00, 153.18 and 64.38

Step by Step Solution

1. Step 1: Write the proportion equation
   111.00 : 153.18 = 64.38 : x
2. Step 2: Convert to fraction form
   111.00/153.18 = 64.38/x
3. Step 3: Cross multiply
   111.00x = 153.18 × 64.38
4. Step 4: Simplify right side
   111.00x = 9,860.96
5. Step 5: Solve for x
   x = 9,860.96/111.00
6. Step 6: Final answer
   x = 88.84