Finding the Fourth Proportional to 50,131.98, 69,186.33 and 28,628.37

Step by Step Solution

1. Step 1: Write the proportion equation
   50,131.98 : 69,186.33 = 28,628.37 : x
2. Step 2: Convert to fraction form
   50,131.98/69,186.33 = 28,628.37/x
3. Step 3: Cross multiply
   50,131.98x = 69,186.33 × 28,628.37
4. Step 4: Simplify right side
   50,131.98x = 1,980,691,854.18
5. Step 5: Solve for x
   x = 1,980,691,854.18/50,131.98
6. Step 6: Final answer
   x = 39,509.55