Finding the Fourth Proportional to 50,085.16, 69,116.88 and 28,866.40

Step by Step Solution

1. Step 1: Write the proportion equation
   50,085.16 : 69,116.88 = 28,866.40 : x
2. Step 2: Convert to fraction form
   50,085.16/69,116.88 = 28,866.40/x
3. Step 3: Cross multiply
   50,085.16x = 69,116.88 × 28,866.40
4. Step 4: Simplify right side
   50,085.16x = 1,995,155,504.83
5. Step 5: Solve for x
   x = 1,995,155,504.83/50,085.16
6. Step 6: Final answer
   x = 39,835.26