Finding the Fourth Proportional to 361,667.64, 499,002.48 and 216,414.96

Step by Step Solution

1. Step 1: Write the proportion equation
   361,667.64 : 499,002.48 = 216,414.96 : x
2. Step 2: Convert to fraction form
   361,667.64/499,002.48 = 216,414.96/x
3. Step 3: Cross multiply
   361,667.64x = 499,002.48 × 216,414.96
4. Step 4: Simplify right side
   361,667.64x = 107,991,601,749.10
5. Step 5: Solve for x
   x = 107,991,601,749.10/361,667.64
6. Step 6: Final answer
   x = 298,593.49