Finding the Fourth Proportional to 36,940.79, 50,978.27 and 20,173.79

Step by Step Solution

1. Step 1: Write the proportion equation
   36,940.79 : 50,978.27 = 20,173.79 : x
2. Step 2: Convert to fraction form
   36,940.79/50,978.27 = 20,173.79/x
3. Step 3: Cross multiply
   36,940.79x = 50,978.27 × 20,173.79
4. Step 4: Simplify right side
   36,940.79x = 1,028,425,091.42
5. Step 5: Solve for x
   x = 1,028,425,091.42/36,940.79
6. Step 6: Final answer
   x = 27,839.82