Finding the Fourth Proportional to 50,646.80, 69,892.52 and 28,290.80

Step by Step Solution

1. Step 1: Write the proportion equation
   50,646.80 : 69,892.52 = 28,290.80 : x
2. Step 2: Convert to fraction form
   50,646.80/69,892.52 = 28,290.80/x
3. Step 3: Cross multiply
   50,646.80x = 69,892.52 × 28,290.80
4. Step 4: Simplify right side
   50,646.80x = 1,977,315,304.82
5. Step 5: Solve for x
   x = 1,977,315,304.82/50,646.80
6. Step 6: Final answer
   x = 39,041.27