Finding the Fourth Proportional to 72,745.20, 108,942.57 and 49,300.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72,745.20 : 108,942.57 = 49,300.56 : x
2. Step 2: Convert to fraction form
   72,745.20/108,942.57 = 49,300.56/x
3. Step 3: Cross multiply
   72,745.20x = 108,942.57 × 49,300.56
4. Step 4: Simplify right side
   72,745.20x = 5,370,929,708.84
5. Step 5: Solve for x
   x = 5,370,929,708.84/72,745.20
6. Step 6: Final answer
   x = 73,832.08