Finding the Fourth Proportional to 300,683.86, 451,025.49 and 123,191.20

Step by Step Solution

1. Step 1: Write the proportion equation
   300,683.86 : 451,025.49 = 123,191.20 : x
2. Step 2: Convert to fraction form
   300,683.86/451,025.49 = 123,191.20/x
3. Step 3: Cross multiply
   300,683.86x = 451,025.49 × 123,191.20
4. Step 4: Simplify right side
   300,683.86x = 55,562,371,343.69
5. Step 5: Solve for x
   x = 55,562,371,343.69/300,683.86
6. Step 6: Final answer
   x = 184,786.68