Finding the Fourth Proportional to 71.94, 99.17 and 53.49

Step by Step Solution

1. Step 1: Write the proportion equation
   71.94 : 99.17 = 53.49 : x
2. Step 2: Convert to fraction form
   71.94/99.17 = 53.49/x
3. Step 3: Cross multiply
   71.94x = 99.17 × 53.49
4. Step 4: Simplify right side
   71.94x = 5,304.34
5. Step 5: Solve for x
   x = 5,304.34/71.94
6. Step 6: Final answer
   x = 73.73