Lost Space After Force Quitting Bootcamp Assistant.

I tried bootcamping my mac through bootcamp assistant. During the partition process, I've then changed my mind and used "force quit' to exit the application.

Disk Utility is reporting that my Hard drive has a capacity of 121.33 GB (as it should). But the single Macintosh HD Partition still reports only a capacity of 84 GB. Essentially i lost 37GB of space and i cant locate it. how can i combine it back or revert it back into a single drive.

please advise. thank you.