Finding the Fourth Proportional to 359,529.72, 496,081.71 and 216,299.00

Step by Step Solution

1. Step 1: Write the proportion equation
   359,529.72 : 496,081.71 = 216,299.00 : x
2. Step 2: Convert to fraction form
   359,529.72/496,081.71 = 216,299.00/x
3. Step 3: Cross multiply
   359,529.72x = 496,081.71 × 216,299.00
4. Step 4: Simplify right side
   359,529.72x = 107,301,975,310.88
5. Step 5: Solve for x
   x = 107,301,975,310.88/359,529.72
6. Step 6: Final answer
   x = 298,450.92