Finding the Fourth Proportional to 300,121.75, 450,016.43 and 122,753.31

Step by Step Solution

1. Step 1: Write the proportion equation
   300,121.75 : 450,016.43 = 122,753.31 : x
2. Step 2: Convert to fraction form
   300,121.75/450,016.43 = 122,753.31/x
3. Step 3: Cross multiply
   300,121.75x = 450,016.43 × 122,753.31
4. Step 4: Simplify right side
   300,121.75x = 55,241,006,336.88
5. Step 5: Solve for x
   x = 55,241,006,336.88/300,121.75
6. Step 6: Final answer
   x = 184,061.99