I assume you have a shared hosting there. I don't know if it is possible to change php memory limit to a bigger value for your account. I think that most shared hosting plans don't allow to change this parameter. Let's try though. Look if there is a php.ini (or php5.ini, maybe) file in the root of your web folder. And look for "memory_limit" parameter there. If you'll find it, try to change it to 128MB like this: "memory_limit = 128M". After that check if something has changed by going to Joomla -> System -> System Information -> PHP Information. Find "memory_limit" there and see if it is 128M.
That solution is just a quick test and it may not work for GoDaddy. It will be much better if you ask the support of GoDaddy to tell you how to increase memory limit (if it is possible, of course).