Finding the Fourth Proportional to 72.51, 108.74 and 49.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72.51 : 108.74 = 49.83 : x
2. Step 2: Convert to fraction form
   72.51/108.74 = 49.83/x
3. Step 3: Cross multiply
   72.51x = 108.74 × 49.83
4. Step 4: Simplify right side
   72.51x = 5,418.51
5. Step 5: Solve for x
   x = 5,418.51/72.51
6. Step 6: Final answer
   x = 74.73