Voila! To view the table in google docs click here.
Column 1 60-30 has marks out of 60. Adding scores of the two performances.
Row A is percentage of audiene votes.
All those numbers in between is final marks out of hundred with 50-50 weightage to judges marks and audience votes. So lets say someone who got 53/60 and 77% of final votes then their final weighted score should be 83.
Final Scores
Baichung - 56 - tan probability area
Hard Kaur - 53 - blue probability area
Gauhar - 46 yellow probability area
Karan - 43 blue probability area
If Hard Kaur got 20% votes Karan needs 36% to beat her. Baichung has to have at least 37%. So Gauhar has only 7%. It is completely plausible.
However, I doubt realitiscally if any contestant scored as low as 7% or that there could be a 16% gap between Hard Kaur and Karan.