using System;

using System.Linq;

using System.Collections.Generic;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

​

public class Program

{

    public static void Main()

    {

        var json = new Decimal[]

        {

        new decimal(100000.000)

        }

​

        ;

        var foo1 = JsonConvert.SerializeObject(json);

        Console.WriteLine(foo1);

        }

    }

​