Finding the Fourth Proportional to 300,649.30, 450,995 and 120,734.72

Step by Step Solution

1. Step 1: Write the proportion equation
   300,649.30 : 450,995 = 120,734.72 : x
2. Step 2: Convert to fraction form
   300,649.30/450,995 = 120,734.72/x
3. Step 3: Cross multiply
   300,649.30x = 450,995 × 120,734.72
4. Step 4: Simplify right side
   300,649.30x = 54,450,755,046.40
5. Step 5: Solve for x
   x = 54,450,755,046.40/300,649.30
6. Step 6: Final answer
   x = 181,110.53