Monster hand vs. overbet - do we fold?

No reads

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) internettexasholdem.com

SB ($27.80)
BB ($97.80)
Hero ($179.40)
MP ($47.70)
CO ($74.95)
Button ($94.80)

Preflop: Hero is UTG with K[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/club.gif[/img]. SB posts a blind of $0.50.
Hero calls $1, <font color="#666666">2 folds</font>, <font color="#CC3333">Button raises to $2</font>, <font color="#666666">1 fold</font>, BB calls $1, Hero calls $1.

Flop: ($6.50) Q[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">BB bets $5</font>, <font color="#CC3333">Hero raises to $17</font>, Button folds, BB calls $90.80 (All-In), Hero calls $78.80.

Turn: ($198.10) K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

River: ($198.10) A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

Final Pot: $198.10