Finding the Fourth Proportional to 72.02, 99.33 and 53.49

Step by Step Solution

1. Step 1: Write the proportion equation
   72.02 : 99.33 = 53.49 : x
2. Step 2: Convert to fraction form
   72.02/99.33 = 53.49/x
3. Step 3: Cross multiply
   72.02x = 99.33 × 53.49
4. Step 4: Simplify right side
   72.02x = 5,313.33
5. Step 5: Solve for x
   x = 5,313.33/72.02
6. Step 6: Final answer
   x = 73.77