Finding the Fourth Proportional to 36,308.42, 50,105.81 and 20,392.87

Step by Step Solution

1. Step 1: Write the proportion equation
   36,308.42 : 50,105.81 = 20,392.87 : x
2. Step 2: Convert to fraction form
   36,308.42/50,105.81 = 20,392.87/x
3. Step 3: Cross multiply
   36,308.42x = 50,105.81 × 20,392.87
4. Step 4: Simplify right side
   36,308.42x = 1,021,801,269.57
5. Step 5: Solve for x
   x = 1,021,801,269.57/36,308.42
6. Step 6: Final answer
   x = 28,142.27