Finding the Fourth Proportional to 300,943.17, 451,439.34 and 123,451.71

Step by Step Solution

1. Step 1: Write the proportion equation
   300,943.17 : 451,439.34 = 123,451.71 : x
2. Step 2: Convert to fraction form
   300,943.17/451,439.34 = 123,451.71/x
3. Step 3: Cross multiply
   300,943.17x = 451,439.34 × 123,451.71
4. Step 4: Simplify right side
   300,943.17x = 55,730,958,484.27
5. Step 5: Solve for x
   x = 55,730,958,484.27/300,943.17
6. Step 6: Final answer
   x = 185,187.65