In the exercise of any of the powers granted in this part 5, a fiduciary has a duty to act reasonably and equitably with due regard for his obligations and responsibilities toward the interests of beneficiaries and creditors and the estate or trust involved and the purposes thereof and with due regard for the manner in which men of prudence, discretion, and intelligence would act in the management of the property of another.
C.R.S. § 15-1-509