Preheat oven to 350°F (175°C). Grease and flour a 9x13 inch baking dish.
In a large bowl, whisk together flour, baking powder, and salt. Set aside.
In another bowl, beat egg yolks with ¾ cup sugar until pale yellow. Stir in milk and vanilla. Pour egg yolk mixture into flour mixture and mix until combined.
In a separate bowl, beat egg whites until soft peaks form. Gradually add remaining ¼ cup sugar and beat until stiff peaks form. Gently fold egg whites into batter.
Pour batter into prepared baking dish. Bake for 30 minutes, or until a toothpick inserted into the center comes out clean. Allow to cool completely.
In a small bowl, whisk together evaporated milk, sweetened condensed milk, and whole milk. Pour over cooled cake.
In a large bowl, beat heavy cream, sugar, and vanilla until stiff peaks form. Spread over cake. Refrigerate for at least 1 hour before serving.