Finding the Fourth Proportional to 664,872.42, 997,308.59 and 166,236.42

Step by Step Solution

1. Step 1: Write the proportion equation
   664,872.42 : 997,308.59 = 166,236.42 : x
2. Step 2: Convert to fraction form
   664,872.42/997,308.59 = 166,236.42/x
3. Step 3: Cross multiply
   664,872.42x = 997,308.59 × 166,236.42
4. Step 4: Simplify right side
   664,872.42x = 165,789,008,805.67
5. Step 5: Solve for x
   x = 165,789,008,805.67/664,872.42
6. Step 6: Final answer
   x = 249,354.62