Finding the Fourth Proportional to 300,949.39, 451,483.11 and 111,411.21

Step by Step Solution

1. Step 1: Write the proportion equation
   300,949.39 : 451,483.11 = 111,411.21 : x
2. Step 2: Convert to fraction form
   300,949.39/451,483.11 = 111,411.21/x
3. Step 3: Cross multiply
   300,949.39x = 451,483.11 × 111,411.21
4. Step 4: Simplify right side
   300,949.39x = 50,300,279,022.61
5. Step 5: Solve for x
   x = 50,300,279,022.61/300,949.39
6. Step 6: Final answer
   x = 167,138.67