Table schema:
CREATE TABLE table_name_61 (sinclair_coefficient INTEGER, sinclair_total VARCHAR, weight_class__kg_ VARCHAR)

Question: What is the average sinclair coefficient with a Sinclair Total of 477.2772023, and a Weight Class (kg) larger than 105?
SQL: SELECT AVG(sinclair_coefficient) FROM table_name_61 WHERE sinclair_total = 477.2772023 AND weight_class__kg_ > 105