Money Short

Four friends--let's call them A, B, C, and D--are planning to go to the concert, but they realize that they are a few dollars short to buy the tickets ($50 per ticket).

We know that each of them has an integer amount of dollars and that

if $B$ borrowed $$1$ from $A$, then $B$ would have $\frac{2}{3}$ of $A$'s balance;
if $C$ borrowed $$2$ from $B$, then $C$ would have $\frac{3}{5}$ of $B$'s balance;
if $D$ borrowed $$3$ from $C$, then $D$ would have $\frac{5}{7}$ of $C$'s balance.

At least how much more money (in $) do they need all together in order to afford 4 tickets?