Finding the Fourth Proportional to 72.61, 108.71 and 49.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72.61 : 108.71 = 49.82 : x
2. Step 2: Convert to fraction form
   72.61/108.71 = 49.82/x
3. Step 3: Cross multiply
   72.61x = 108.71 × 49.82
4. Step 4: Simplify right side
   72.61x = 5,416.33
5. Step 5: Solve for x
   x = 5,416.33/72.61
6. Step 6: Final answer
   x = 74.60