Finding the Fourth Proportional to 72.56, 108.72 and 48.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72.56 : 108.72 = 48.52 : x
2. Step 2: Convert to fraction form
   72.56/108.72 = 48.52/x
3. Step 3: Cross multiply
   72.56x = 108.72 × 48.52
4. Step 4: Simplify right side
   72.56x = 5,275.09
5. Step 5: Solve for x
   x = 5,275.09/72.56
6. Step 6: Final answer
   x = 72.70