The 'zero' digit is used as a place-holder.
Four holds the ones place in the number 4.093.
It is the 'ones' place.
2 is in the ones place value.
The ones place
tenths to the lowest place value, ones to the highest
The four in the hundredths place is 1/100 the value of the 4 in the ones place.
Place value of 5 in 205 is ones.