Finding the Fourth Proportional to 72,558.43, 108,809.63 and 28,179.19

Step by Step Solution

1. Step 1: Write the proportion equation
   72,558.43 : 108,809.63 = 28,179.19 : x
2. Step 2: Convert to fraction form
   72,558.43/108,809.63 = 28,179.19/x
3. Step 3: Cross multiply
   72,558.43x = 108,809.63 × 28,179.19
4. Step 4: Simplify right side
   72,558.43x = 3,066,167,338.39
5. Step 5: Solve for x
   x = 3,066,167,338.39/72,558.43
6. Step 6: Final answer
   x = 42,257.90