Fractionaly or Fractionally: How To spell?
The word Fractionaly is misspelled against Fractionally, an adverb meaning "By fractions or separate portions; as, to distill a liquid fractionally, that is, so as to separate different portions."
Fractionally has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings fractiona & y which should not be misspelled with single 'L'
Wrong Spelling:  fractiona-l-y  Correct Spelling:  fractiona-ll-y 
Find more incorrect spellings of Fractionally to spell right way.