Finding the Fourth Proportional to 72.52, 108.74 and 49.70

Step by Step Solution

1. Step 1: Write the proportion equation
   72.52 : 108.74 = 49.70 : x
2. Step 2: Convert to fraction form
   72.52/108.74 = 49.70/x
3. Step 3: Cross multiply
   72.52x = 108.74 × 49.70
4. Step 4: Simplify right side
   72.52x = 5,404.38
5. Step 5: Solve for x
   x = 5,404.38/72.52
6. Step 6: Final answer
   x = 74.52