Smith & Thompson is currently operating at only $84$ percent of fixed asset capacity. Current sales are $$550,000.$ What is the maximum rate at which sales can grow before any new fixed assets are needed?

Multiple Choice

$19\mathrm{.}05\%$

$18\mathrm{.}03\%$

$17\mathrm{.}47\%$

$17\mathrm{.}23\%$