Q. A 45-year-old man presents to your clinic with complaints of cough with greenish sputum, and fever for the past week. He reports feeling generally unwell and fatigued. He has a history of smoking and no significant medical comorbidities. His temperature is 100.4°F (38°C), pulse is 92 beats per minute, blood pressure is 130/80 mmHg, and respiratory rate is 18 per minute. On physical examination, dullness to percussion is observed on the right lower lung field with decreased breath sounds and coarse crackles in the same affected field. What is the most appropriate next step in management for this patient?