Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_67 (lowest INTEGER, stadium VARCHAR, average VARCHAR)
### Question:
What's the highest lowest number of capacity that ibrox stadium has when the average is larger than 49,143?
### Answer:
SELECT MAX(lowest) FROM table_name_67 WHERE stadium = "ibrox stadium" AND average > 49 OFFSET 143