Will the transaction be made ?
May be. May be not.
Is it possible to add fee to a already sent transaction ?
No. It will be not the *same* transaction.
But it is possible to send another transaction with the same inputs and non-zero fees.
It is not very trivial and requires *any* backup of your wallet.dat before you sent this transaction.
Is the address 1LKtSutJ6xufD38WnyJrZGH2ihzYDoaEAM yours?
If yes - continue. If no - stop here and think what are you doing
1. Shut down the bitcoin-qt
2. Backup your current wallet.dat file (not required, but why not to do it?)
3. Restore from your yesterday backup
4. Start bitcoin-qt
5. Ensure that the wallet does not show transaction d5c9a2f585f2931eae8d5b95800a783000fe733a4af071b0b6e71b4006a9ec35
and
balance is greater than 0.17 but less than 0.346. Send another 0.17 to 1LKtSutJ6xufD38WnyJrZGH2ihzYDoaEAM but add a fee
If you have more than 0.34 on your balance the steps should be slightly different
1. Shut down the bitcoin-qt
2. Backup your current wallet.dat file (not required, but why not to do it?)
3. Restore from your yesterday backup
4. Start bitcoin-qt
5. Ensure that the wallet does not show transaction d5c9a2f585f2931eae8d5b95800a783000fe733a4af071b0b6e71b4006a9ec35
6. Create one incoming address.
7. Send all your funds to your new address. Do not forget about fee.
8. Wait 6 confirmations
9. Send another 0.17 to 1LKtSutJ6xufD38WnyJrZGH2ihzYDoaEAM from your new address, add a fee.