Table schema:
CREATE TABLE table_name_70 (area__msr_ INTEGER, rank VARCHAR, area__sqdeg_ VARCHAR, family VARCHAR)

Question: What is the largest Area (msr) that has an Area less than 291.045, is part of the Per family, and has a rank higher than 78?
SQL: SELECT MAX(area__msr_) FROM table_name_70 WHERE area__sqdeg_ < 291.045 AND family = "per" AND rank > 78