Finding the Fourth Proportional to 389,849.52, 537,996.83 and 228,707.31

Step by Step Solution

1. Step 1: Write the proportion equation
   389,849.52 : 537,996.83 = 228,707.31 : x
2. Step 2: Convert to fraction form
   389,849.52/537,996.83 = 228,707.31/x
3. Step 3: Cross multiply
   389,849.52x = 537,996.83 × 228,707.31
4. Step 4: Simplify right side
   389,849.52x = 123,043,806,634.29
5. Step 5: Solve for x
   x = 123,043,806,634.29/389,849.52
6. Step 6: Final answer
   x = 315,618.72