Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_67 ( share INTEGER, viewers__m_ VARCHAR, timeslot_rank VARCHAR )

### Question ###
What is the smallest share for a timeslot ranking less than 4 and fewer viewers than 8.78 million?

### Accurate SQL ###

SELECT MIN(share) FROM table_name_67 WHERE viewers__m_ < 8.78 AND timeslot_rank < 4