Finding the Fourth Proportional to 389,499.49, 583,896.58 and 152,778.61

Step by Step Solution

1. Step 1: Write the proportion equation
   389,499.49 : 583,896.58 = 152,778.61 : x
2. Step 2: Convert to fraction form
   389,499.49/583,896.58 = 152,778.61/x
3. Step 3: Cross multiply
   389,499.49x = 583,896.58 × 152,778.61
4. Step 4: Simplify right side
   389,499.49x = 89,206,906,034.47
5. Step 5: Solve for x
   x = 89,206,906,034.47/389,499.49
6. Step 6: Final answer
   x = 229,029.59