Yes!
TurboTax is not going to be able to do the calculations. You will have to do that manually. Whether you can deduct the full $47K depends on in which year the loss was realized. If it was realized in 2018, use the full amount. If it was an early year, you'll have to reduce it by the $3000 per year you previously deducted (or by any amounts you used on previous year returns to reduce capital gains).
