In the fourth position or order; as the fourth point or argument.
Fourthly, we need to consider the environmental impact of the project.
To indicate the fourth item in a list or enumeration.
The presentation outlined the goals: firstly, to increase revenue; secondly, to enhance customer satisfaction; thirdly, to improve efficiency; and fourthly, to ensure sustainability.
Used to introduce the fourth point in a sequence.
Fourthly, let us discuss the financial implications of this decision.
Etymology
From Middle English 'fourth' + 'ly'
Common Phrases and Expressions
fourthly speaking
In terms of the fourth point or argument being made.
fourthly considered
When the fourth consideration or aspect is taken into account.