45,000 a month is totally sufficient. I think some of these people are being sarcastic with their answers? I've never heard of someone getting that high of salary here...But I am surprised the salary is so high without housing.
You can rent a beautiful flat or villa for 10 - 15 K and rent a car for 3,000 a month.
Gosh if that's not enough, think of all the foreigner Arabs and Asians living on less than 8,000 for the whole family.