Finding the Fourth Proportional to 359,570.58, 496,255.05 and 216,410.10

Step by Step Solution

1. Step 1: Write the proportion equation
   359,570.58 : 496,255.05 = 216,410.10 : x
2. Step 2: Convert to fraction form
   359,570.58/496,255.05 = 216,410.10/x
3. Step 3: Cross multiply
   359,570.58x = 496,255.05 × 216,410.10
4. Step 4: Simplify right side
   359,570.58x = 107,394,604,996.01
5. Step 5: Solve for x
   x = 107,394,604,996.01/359,570.58
6. Step 6: Final answer
   x = 298,674.62