Finding the Fourth Proportional to 37,865.09, 56,777.69 and 20,105.71

Step by Step Solution

1. Step 1: Write the proportion equation
   37,865.09 : 56,777.69 = 20,105.71 : x
2. Step 2: Convert to fraction form
   37,865.09/56,777.69 = 20,105.71/x
3. Step 3: Cross multiply
   37,865.09x = 56,777.69 × 20,105.71
4. Step 4: Simplify right side
   37,865.09x = 1,141,555,677.93
5. Step 5: Solve for x
   x = 1,141,555,677.93/37,865.09
6. Step 6: Final answer
   x = 30,147.97