This needs to run as an administrator to get paths for all processes
This one liner gets the path of the process that is using local port 61119
([System.Diagnostics.Process]::GetProcessById((Get-NetTCPConnection -localport 61119).owningprocess)).path
This will get you a list of process identifiers (PID) sorted by local port
Get-NetTCPConnection | select localport, owningprocess | sort localport
Finally get all the ports in use by a process
Get-NetTCPConnection -owningprocess 61980 | select localport
Know a port and wonder what other ports the process is using?
Get-NetTCPConnection -owningprocess([System.Diagnostics.Process]::GetProcessById((Get-NetTCPConnection -localport 61119).owningprocess).id) | select localport