Finding the Fourth Proportional to 50,315.47, 69,436.16 and 28,805.13

Step by Step Solution

1. Step 1: Write the proportion equation
   50,315.47 : 69,436.16 = 28,805.13 : x
2. Step 2: Convert to fraction form
   50,315.47/69,436.16 = 28,805.13/x
3. Step 3: Cross multiply
   50,315.47x = 69,436.16 × 28,805.13
4. Step 4: Simplify right side
   50,315.47x = 2,000,117,687.51
5. Step 5: Solve for x
   x = 2,000,117,687.51/50,315.47
6. Step 6: Final answer
   x = 39,751.55