Finding the Fourth Proportional to 300,046.73, 449,976.20 and 100,320.53

Step by Step Solution

1. Step 1: Write the proportion equation
   300,046.73 : 449,976.20 = 100,320.53 : x
2. Step 2: Convert to fraction form
   300,046.73/449,976.20 = 100,320.53/x
3. Step 3: Cross multiply
   300,046.73x = 449,976.20 × 100,320.53
4. Step 4: Simplify right side
   300,046.73x = 45,141,848,119.90
5. Step 5: Solve for x
   x = 45,141,848,119.90/300,046.73
6. Step 6: Final answer
   x = 150,449.39