Finding the Fourth Proportional to 36,906.42, 50,931 and 20,139.42

Step by Step Solution

1. Step 1: Write the proportion equation
   36,906.42 : 50,931 = 20,139.42 : x
2. Step 2: Convert to fraction form
   36,906.42/50,931 = 20,139.42/x
3. Step 3: Cross multiply
   36,906.42x = 50,931 × 20,139.42
4. Step 4: Simplify right side
   36,906.42x = 1,025,720,800.02
5. Step 5: Solve for x
   x = 1,025,720,800.02/36,906.42
6. Step 6: Final answer
   x = 27,792.48