Sentence:  Presumably , if the reverse is the case and the good effect is more certain than the evil result that may be forthcoming , not only must the good and the evil be prudentially weighed and <WSD>found</WSD> proportionate , but also calculation of the probabilities and of the degree of certainty or uncertainty in the good or evil effect must be taken into account . 
Meaning of the word marked with <WSD> tags:  establish after a calculation, investigation, experiment, survey, or study