How do you write 73.774 in words?

Answer 1

'73.774 in words is 'Seventy three point seven seven four'.

NOT 'seventy three point seven hundred and seventy four', becasuse the first (left hand) seven is a tenth , not a hundred. The second seven is hundredth, and the four is a 'thousandth'.

NOte the use of the suffix '---th'.

Answer 2

Seventy-Three point Seven Hundred Seventy-Four

or

Seventy-Three and Seven Hundred Seventy-Four Thousandths