What is the highest number supporting prohibition in British Columbia when the percent opposing is more than 10.8, the percent supporting is less than 72.2, number against is less than 4,756?
CREATE TABLE "results_of_the_national_referendum_on_pr" (
  "jurisdiction" text,
  "for_prohibition" real,
  "percent_for" real,
  "against_prohibition" real,
  "percent_against" real
);
SELECT MAX("for_prohibition") FROM "results_of_the_national_referendum_on_pr" WHERE "percent_against">10.8 AND "percent_for"<72.2 AND "jurisdiction"='british columbia' AND "against_prohibition"<'4,756';