Finding the Fourth Proportional to 50,667.36, 69,920.82 and 28,311.36

Step by Step Solution

1. Step 1: Write the proportion equation
   50,667.36 : 69,920.82 = 28,311.36 : x
2. Step 2: Convert to fraction form
   50,667.36/69,920.82 = 28,311.36/x
3. Step 3: Cross multiply
   50,667.36x = 69,920.82 × 28,311.36
4. Step 4: Simplify right side
   50,667.36x = 1,979,553,506.52
5. Step 5: Solve for x
   x = 1,979,553,506.52/50,667.36
6. Step 6: Final answer
   x = 39,069.60