Vishnu sahasranamam,slok86

Slok86:       SuvarNabinDu rakshobhyaHa  Sarva VAgeeswareswaraha
      ...   .         MahAhraDo  MahAgartho  MahAbhutho  MahAnidhihi

The safe gaurd of the "Golden point" of Vishnu kshetra, the Lord of all Brahmas, the great Assimilator and the great  Lord of cosmos, the great Supreme being, and the great Treasure , is Sree Maha Vishnu.

The " Suvarna binDu", grips the thri lokas with its Extrodinory  dencity of sustaining power of attraction.
Vishnu is the "Protector " of this Golden point. That's  why, Vishnu is called the "Thrilokesa". Because Vishnu gaurds the "Suvarna bindu", along with various Brahmas, stands responsible for the grand  act of  creation and dissolution. That's why,Vishnu is named the " Supreme Being"," The lord of lords".  Ofcourse, a portion of Vishnu's grace, present in different  forms with different assigned portpholios, works for running the universal show.

Om Vishnave namaha