def calculate_performance_stats(data):
    """
    Calculate performance statistics from given data.

    Args:
        data (list): List of tuples containing version, execution time, and other metrics.

    Returns:
        tuple: Tuple containing average execution time, max execution time, and min execution time.
    """
    total_time = sum(item[1] for item in data)
    avg_time = total_time / len(data)
    return (avg_time, max(item[1] for item in data), min(item[1] for item in data))

# Example usage:
data = [('v5_1768236144', 108217.11959687909, 721, 15009.3),
        ('v5_1768235312', 89435.63603047856, 734, 12184.7),
        ('v5_1768235983', 98379.19963352643, 987, 9967.5)]

result = calculate_performance_stats(data)
print(result)