力ちからを致いたす

expression, godan verb (-su)

to lend one's strength; to make an effort (humble)

Humble expression (謙譲語) used when the speaker or in-group offers assistance or exerts effort for someone of higher status. Often used in formal or business contexts.

• 私わたくしどももできる限かぎり力ちからを致いたします。

  We will also do our utmost to assist.

• 社しゃ長ちょうのために力ちからを致いたす所しょ存ぞんです。

  I intend to put forth my best effort for the company president.