Parse Fixed With Text File with regex replace with trimming option... (no looping logic)

Fixed Width text file

1. 111   2222  333       444444
2. 555   6666  777 8888

 Desired output

1. "111","2222","333","444444"
2. "555","6666","777","8888"

$str ='111   2222  333       444444'
$regex = [regex]'(.{5})(.{5})(.{4})(.+)?'
$replace = '"$1","$2","$3","$4"'
$str -replace $regex,$replace