Finding the Fourth Proportional to 50,680.69, 69,936.33 and 28,018.32

Step by Step Solution

1. Step 1: Write the proportion equation
   50,680.69 : 69,936.33 = 28,018.32 : x
2. Step 2: Convert to fraction form
   50,680.69/69,936.33 = 28,018.32/x
3. Step 3: Cross multiply
   50,680.69x = 69,936.33 × 28,018.32
4. Step 4: Simplify right side
   50,680.69x = 1,959,498,123.88
5. Step 5: Solve for x
   x = 1,959,498,123.88/50,680.69
6. Step 6: Final answer
   x = 38,663.61