Finding the Fourth Proportional to 297,793.74, 411,004.35 and 217,487.10

Step by Step Solution

1. Step 1: Write the proportion equation
   297,793.74 : 411,004.35 = 217,487.10 : x
2. Step 2: Convert to fraction form
   297,793.74/411,004.35 = 217,487.10/x
3. Step 3: Cross multiply
   297,793.74x = 411,004.35 × 217,487.10
4. Step 4: Simplify right side
   297,793.74x = 89,388,144,168.89
5. Step 5: Solve for x
   x = 89,388,144,168.89/297,793.74
6. Step 6: Final answer
   x = 300,167.98