Finding the Fourth Proportional to 298,923.33, 448,491.89 and 128,073.27

Step by Step Solution

1. Step 1: Write the proportion equation
   298,923.33 : 448,491.89 = 128,073.27 : x
2. Step 2: Convert to fraction form
   298,923.33/448,491.89 = 128,073.27/x
3. Step 3: Cross multiply
   298,923.33x = 448,491.89 × 128,073.27
4. Step 4: Simplify right side
   298,923.33x = 57,439,822,920.78
5. Step 5: Solve for x
   x = 57,439,822,920.78/298,923.33
6. Step 6: Final answer
   x = 192,155.70