Update viewfield state with placeholder addition values

Forms\Components\Placeholder::make('vcpu_cost')
    ->content(fn (Get $get): string => Number::currency(
        Vcpu::where('id', '=', $get('vcpu_id'))
        ->first()->price,
        'EUR',
        App::currentLocale())
    ),
Forms\Components\Placeholder::make('ram_cost')
    ->content(fn (Get $get): string => Number::currency(
        Ram::where('id', '=', $get('ram_id'))
            ->first()->price,
        'EUR',
        App::currentLocale())
    ),
Forms\Components\Placeholder::make('disk_space_cost')
    ->content(fn (Get $get): string => Number::currency(
        $get('disk_space_cost_per_go') * (int) $get('disk_space'),
        'EUR',
        App::currentLocale())
    ),
Forms\Components\ViewField::make('total_cost')
    ->label(__('vmc.total_cost'))
    ->disabled()
    ->inlineLabel()
    ->view('filament.forms.components.horizontal-label-price'),
    // I think I have to add something here...