Final answer:
Richard would need to complete missed continuing education courses, pay any late fees or penalties, and submit an application for reinstatement in order to save his real estate license after missing the fourth renewal.
Step-by-step explanation:
In order to save his real estate license after missing the fourth renewal, Richard would need to take the necessary steps to reinstate it. The specific requirements may vary depending on the jurisdiction, but generally, he would be required to complete any missed continuing education courses, pay any late fees or penalties, and submit an application for reinstatement. It's important for Richard to consult with the appropriate regulatory agency or licensing authority to understand the exact process and requirements.