Finding the Fourth Proportional to 71.48, 98.72 and 53.06

Step by Step Solution

1. Step 1: Write the proportion equation
   71.48 : 98.72 = 53.06 : x
2. Step 2: Convert to fraction form
   71.48/98.72 = 53.06/x
3. Step 3: Cross multiply
   71.48x = 98.72 × 53.06
4. Step 4: Simplify right side
   71.48x = 5,237.32
5. Step 5: Solve for x
   x = 5,237.32/71.48
6. Step 6: Final answer
   x = 73.27