The question is whether KE check-in staff would allow the OP to board the flight to BOM at all. I would guess this depends on the discretion of duty manager there.

Recently I was in a 'similar' situation. I was travelling from KUL to DXB on EK with a pre-arranged 96 hour UAE visa. I was to leave UAE after 4 days. When I gave them my outbound ticket, the check-in staff at KUL analyzed and found out that I was leaving UAE after 98 hours. So, they almost refused to board me to DXB. (They even refused to consider the fact that I could have arranged for a different ticket to leave well before 96 hours).