Can we do the domain migration for 4 node SQL cluster? Can we do the domain migration for 4 node SQL cluster ?
Microsoft does not supports migrating cluster from one domain to other. Their is support article describing this.

This support article  clearly mentiones that 


  Because of an increased dependence on Active Directory Domain Services, Microsoft does not support moving an already installed and configured Windows Server 2008, Windows Server 2008 R2 and Windows Server 2012 failover cluster from one domain to another. You must create a new cluster. Additionally, you must re-cluster highly available applications.


It would be better to rebuild the cluster from scratch in other domain.

In windows server 2016 you can have cluster nodes in 2 different domain