Finding the Fourth Proportional to 300,648.30, 450,993.50 and 120,733.72

Step by Step Solution

1. Step 1: Write the proportion equation
   300,648.30 : 450,993.50 = 120,733.72 : x
2. Step 2: Convert to fraction form
   300,648.30/450,993.50 = 120,733.72/x
3. Step 3: Cross multiply
   300,648.30x = 450,993.50 × 120,733.72
4. Step 4: Simplify right side
   300,648.30x = 54,450,122,351.55
5. Step 5: Solve for x
   x = 54,450,122,351.55/300,648.30
6. Step 6: Final answer
   x = 181,109.03