Final answer:
In the 2014 Fortune magazine's ranking, Walmart stores were identified as the largest corporation based on revenues, surpassing other major companies like Royal Dutch Shell and Toyota.
Step-by-step explanation:
According to the 2014 Fortune magazine's ranking of the global 500 companies, the largest corporation based on revenues is Walmart stores. Walmart's size is immense and when compared to economies of countries, if Walmart were a nation, it would be larger than the economies of all but 23 of the 211 members of the United Nations. This underscores the tremendous scale of Walmart's operations and revenue generation, outpacing other corporate giants such as Royal Dutch Shell, Toyota, and Exxon Corporation.