Finding the Fourth Proportional to 72,584.56, 108,919 and 28,241.92

Step by Step Solution

1. Step 1: Write the proportion equation
   72,584.56 : 108,919 = 28,241.92 : x
2. Step 2: Convert to fraction form
   72,584.56/108,919 = 28,241.92/x
3. Step 3: Cross multiply
   72,584.56x = 108,919 × 28,241.92
4. Step 4: Simplify right side
   72,584.56x = 3,076,081,684.48
5. Step 5: Solve for x
   x = 3,076,081,684.48/72,584.56
6. Step 6: Final answer
   x = 42,379.28