Finding the Fourth Proportional to 80.98, 111.62 and 53.33

Step by Step Solution

1. Step 1: Write the proportion equation
   80.98 : 111.62 = 53.33 : x
2. Step 2: Convert to fraction form
   80.98/111.62 = 53.33/x
3. Step 3: Cross multiply
   80.98x = 111.62 × 53.33
4. Step 4: Simplify right side
   80.98x = 5,952.71
5. Step 5: Solve for x
   x = 5,952.71/80.98
6. Step 6: Final answer
   x = 73.51