Finding the Fourth Proportional to 73.98, 102.20 and 53.33

Step by Step Solution

1. Step 1: Write the proportion equation
   73.98 : 102.20 = 53.33 : x
2. Step 2: Convert to fraction form
   73.98/102.20 = 53.33/x
3. Step 3: Cross multiply
   73.98x = 102.20 × 53.33
4. Step 4: Simplify right side
   73.98x = 5,449.55
5. Step 5: Solve for x
   x = 5,449.55/73.98
6. Step 6: Final answer
   x = 73.66