Finding the Fourth Proportional to 200,939.50, 277,296.51 and 111,515.50

Step by Step Solution

1. Step 1: Write the proportion equation
   200,939.50 : 277,296.51 = 111,515.50 : x
2. Step 2: Convert to fraction form
   200,939.50/277,296.51 = 111,515.50/x
3. Step 3: Cross multiply
   200,939.50x = 277,296.51 × 111,515.50
4. Step 4: Simplify right side
   200,939.50x = 30,922,858,960.91
5. Step 5: Solve for x
   x = 30,922,858,960.91/200,939.50
6. Step 6: Final answer
   x = 153,891.39