fortuitously (adverb)

1. Fortuitously, the dress I had been eyeing went on sale just in time for the wedding.

2. Fortuitously, the superhero arrived right before the city was about to be destroyed.

3. Fortuitously, the protagonist stumbled upon a hidden treasure in the old mansion.

4. Fortuitously, the main character found the love of their life at a chance encounter in the park.