Finding the Fourth Proportional to 300,819.12, 451,229.72 and 76,179.48

Step by Step Solution

1. Step 1: Write the proportion equation
   300,819.12 : 451,229.72 = 76,179.48 : x
2. Step 2: Convert to fraction form
   300,819.12/451,229.72 = 76,179.48/x
3. Step 3: Cross multiply
   300,819.12x = 451,229.72 × 76,179.48
4. Step 4: Simplify right side
   300,819.12x = 34,374,445,430.15
5. Step 5: Solve for x
   x = 34,374,445,430.15/300,819.12
6. Step 6: Final answer
   x = 114,269.48