Finding the Fourth Proportional to 72,559.94, 108,819.23 and 28,177.20

Step by Step Solution

1. Step 1: Write the proportion equation
   72,559.94 : 108,819.23 = 28,177.20 : x
2. Step 2: Convert to fraction form
   72,559.94/108,819.23 = 28,177.20/x
3. Step 3: Cross multiply
   72,559.94x = 108,819.23 × 28,177.20
4. Step 4: Simplify right side
   72,559.94x = 3,066,221,066.67
5. Step 5: Solve for x
   x = 3,066,221,066.67/72,559.94
6. Step 6: Final answer
   x = 42,257.77