Finding the Fourth Proportional to 359,726.49, 496,353.55 and 216,495.76

Step by Step Solution

1. Step 1: Write the proportion equation
   359,726.49 : 496,353.55 = 216,495.76 : x
2. Step 2: Convert to fraction form
   359,726.49/496,353.55 = 216,495.76/x
3. Step 3: Cross multiply
   359,726.49x = 496,353.55 × 216,495.76
4. Step 4: Simplify right side
   359,726.49x = 107,458,439,377.52
5. Step 5: Solve for x
   x = 107,458,439,377.52/359,726.49
6. Step 6: Final answer
   x = 298,722.62