Finding the Fourth Proportional to 50,666.50, 69,919.77 and 28,310.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,666.50 : 69,919.77 = 28,310.50 : x
2. Step 2: Convert to fraction form
   50,666.50/69,919.77 = 28,310.50/x
3. Step 3: Cross multiply
   50,666.50x = 69,919.77 × 28,310.50
4. Step 4: Simplify right side
   50,666.50x = 1,979,463,648.59
5. Step 5: Solve for x
   x = 1,979,463,648.59/50,666.50
6. Step 6: Final answer
   x = 39,068.49