CREATE TABLE table_72139 ("No. in season" FLOAT, "No. in series" FLOAT, "Title" TEXT, "Canadian airdate" TEXT, "US airdate" TEXT, "Production code" FLOAT)

The episode titled 'don't stop believin'' was what highest number of the season?
SELECT MAX("No. in season") FROM table_72139 WHERE "Title" = 'Don''t Stop Believin'
SELECT MAX("No. in season") FROM "table_72139" WHERE "Title" = 'Don\'t Stop Believin'