Key TakeawaysCostco Wholesale reported fiscal fourth-quarter earnings that topped analysts’ expectations but narrowly missed on revenue.The warehouse retailer's e-commerce sales came short of estimates despite rising 18.9% year-over-year, as the pace of growth slowed.While Costco's recent hike in membership fees didn't impact the period, investors will be watching how higher fees could affect the company’s results going forward. Costco Wholesale (COST) reported fiscal fourth-quarter earnings that topped ana ...