It's important to note that "most popular" can be interpreted in different ways, and there are multiple ways to rank languages based on different criteria. Here are some common ways to rank languages:
* Number of native speakers: This is the most common way to rank languages, and by this metric, Hindi is the fourth most spoken language with approximately 602 million native speakers.
* Total number of speakers (including second language speakers): By this metric, Hindi would likely be ranked even higher.
* Number of countries where it is an official language: Hindi is an official language in India.
It's also important to consider that language rankings can change over time.