Finding the Fourth Proportional to 72,610.49, 108,922.45 and 28,240.61

Step by Step Solution

1. Step 1: Write the proportion equation
   72,610.49 : 108,922.45 = 28,240.61 : x
2. Step 2: Convert to fraction form
   72,610.49/108,922.45 = 28,240.61/x
3. Step 3: Cross multiply
   72,610.49x = 108,922.45 × 28,240.61
4. Step 4: Simplify right side
   72,610.49x = 3,076,035,815.48
5. Step 5: Solve for x
   x = 3,076,035,815.48/72,610.49
6. Step 6: Final answer
   x = 42,363.52