Finding the Fourth Proportional to 665,105.31, 997,805.52 and 191,753.73

Step by Step Solution

1. Step 1: Write the proportion equation
   665,105.31 : 997,805.52 = 191,753.73 : x
2. Step 2: Convert to fraction form
   665,105.31/997,805.52 = 191,753.73/x
3. Step 3: Cross multiply
   665,105.31x = 997,805.52 × 191,753.73
4. Step 4: Simplify right side
   665,105.31x = 191,332,930,274.59
5. Step 5: Solve for x
   x = 191,332,930,274.59/665,105.31
6. Step 6: Final answer
   x = 287,673.14