Finding the Fourth Proportional to 50,219.36, 69,302.71 and 28,709.57

Step by Step Solution

1. Step 1: Write the proportion equation
   50,219.36 : 69,302.71 = 28,709.57 : x
2. Step 2: Convert to fraction form
   50,219.36/69,302.71 = 28,709.57/x
3. Step 3: Cross multiply
   50,219.36x = 69,302.71 × 28,709.57
4. Step 4: Simplify right side
   50,219.36x = 1,989,651,003.93
5. Step 5: Solve for x
   x = 1,989,651,003.93/50,219.36
6. Step 6: Final answer
   x = 39,619.20