Finding the Fourth Proportional to 300,658.72, 451,009.12 and 120,744.14

Step by Step Solution

1. Step 1: Write the proportion equation
   300,658.72 : 451,009.12 = 120,744.14 : x
2. Step 2: Convert to fraction form
   300,658.72/451,009.12 = 120,744.14/x
3. Step 3: Cross multiply
   300,658.72x = 451,009.12 × 120,744.14
4. Step 4: Simplify right side
   300,658.72x = 54,456,708,326.56
5. Step 5: Solve for x
   x = 54,456,708,326.56/300,658.72
6. Step 6: Final answer
   x = 181,124.66