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With perl

$ # note that the order is changed for second line here
$ cat ip.txt
process1 port=1234 authenticate=true appID=dummyAppId1 <some more params>
process3 port=1244 appID=dummyAppId2 authenticate=false <some more params>
process2 port=1235 authenticate=true appID=dummyAppId3 <some more params>

$ perl -lpe 's/(?=.*(port=[^ ]+))(?=.*(authenticate=[^ ]+))(?=.*(appID=[^ ]+)).*/$1\t$2\t$3/; print $.' ip.txt 
1
port=1234   authenticate=true   appID=dummyAppId1
2
port=1244   authenticate=false  appID=dummyAppId2
3
port=1235   authenticate=true   appID=dummyAppId3

• (?=.*(port=[^ ]+)) first capture group for port
• (?=.*(authenticate=[^ ]+)) second capture group for authenticate and so on
• print $. for line number
• To avoid partial matches, use \bport, \bappID etc if word boundary is enough. Otherwise, use (?<!\S)(port=[^ ]+) to restrict based on whitespace.

If you need to print only lines containing appID or any other such condition, change -lpe to -lne and change print $. to print "$.\n$_" if /appID/