Finding the Fourth Proportional to 644,667.72, 967,281.02 and 245,421.96

Step by Step Solution

1. Step 1: Write the proportion equation
   644,667.72 : 967,281.02 = 245,421.96 : x
2. Step 2: Convert to fraction form
   644,667.72/967,281.02 = 245,421.96/x
3. Step 3: Cross multiply
   644,667.72x = 967,281.02 × 245,421.96
4. Step 4: Simplify right side
   644,667.72x = 237,392,003,799.20
5. Step 5: Solve for x
   x = 237,392,003,799.20/644,667.72
6. Step 6: Final answer
   x = 368,239.32