Finding the Fourth Proportional to 503,058.59, 693,991.86 and 298,993.55

Step by Step Solution

1. Step 1: Write the proportion equation
   503,058.59 : 693,991.86 = 298,993.55 : x
2. Step 2: Convert to fraction form
   503,058.59/693,991.86 = 298,993.55/x
3. Step 3: Cross multiply
   503,058.59x = 693,991.86 × 298,993.55
4. Step 4: Simplify right side
   503,058.59x = 207,499,086,422.54
5. Step 5: Solve for x
   x = 207,499,086,422.54/503,058.59
6. Step 6: Final answer
   x = 412,474.99