Finding the Fourth Proportional to 57,821.72, 79,807.28 and 37,643.47

Step by Step Solution

1. Step 1: Write the proportion equation
   57,821.72 : 79,807.28 = 37,643.47 : x
2. Step 2: Convert to fraction form
   57,821.72/79,807.28 = 37,643.47/x
3. Step 3: Cross multiply
   57,821.72x = 79,807.28 × 37,643.47
4. Step 4: Simplify right side
   57,821.72x = 3,004,222,562.73
5. Step 5: Solve for x
   x = 3,004,222,562.73/57,821.72
6. Step 6: Final answer
   x = 51,956.65