Finding the Fourth Proportional to 37,149.74, 55,629.42 and 20,491.25

Step by Step Solution

1. Step 1: Write the proportion equation
   37,149.74 : 55,629.42 = 20,491.25 : x
2. Step 2: Convert to fraction form
   37,149.74/55,629.42 = 20,491.25/x
3. Step 3: Cross multiply
   37,149.74x = 55,629.42 × 20,491.25
4. Step 4: Simplify right side
   37,149.74x = 1,139,915,997.59
5. Step 5: Solve for x
   x = 1,139,915,997.59/37,149.74
6. Step 6: Final answer
   x = 30,684.36