Future portfolio value with constant spending

Question

If invested assets grow at rate r and you spend at constant rate s, both in continuous time, is there an analytical formula for the future value of a portfolio at time t? For example if you start with 100,000 dollars that would grow to 104,000 dollars in one year without withdrawals, but you actually withdraw $10,000 continuously during the year, how much will you have at year end? The problem could be discretized and then simulated, but I wonder if there is an analytical solution.