Finding the Fourth Proportional to 37,168.20, 51,291.72 and 20,172.42

Step by Step Solution

1. Step 1: Write the proportion equation
   37,168.20 : 51,291.72 = 20,172.42 : x
2. Step 2: Convert to fraction form
   37,168.20/51,291.72 = 20,172.42/x
3. Step 3: Cross multiply
   37,168.20x = 51,291.72 × 20,172.42
4. Step 4: Simplify right side
   37,168.20x = 1,034,678,118.36
5. Step 5: Solve for x
   x = 1,034,678,118.36/37,168.20
6. Step 6: Final answer
   x = 27,837.72