Finding the Fourth Proportional to 72,579.52, 108,818.25 and 28,168.84

Step by Step Solution

1. Step 1: Write the proportion equation
   72,579.52 : 108,818.25 = 28,168.84 : x
2. Step 2: Convert to fraction form
   72,579.52/108,818.25 = 28,168.84/x
3. Step 3: Cross multiply
   72,579.52x = 108,818.25 × 28,168.84
4. Step 4: Simplify right side
   72,579.52x = 3,065,283,873.33
5. Step 5: Solve for x
   x = 3,065,283,873.33/72,579.52
6. Step 6: Final answer
   x = 42,233.45