Find the Predecessor: What Number Comes Before 70,010?

To solve this problem, let's proceed as follows:

• Step 1: Identify the given number, which is $70,010$.
• Step 2: Use subtraction to find the predecessor. The formula to use here is: Predecessor = Given Number - 1.
• Step 3: Perform the calculation: $70,010 - 1 = 70,009$.

Therefore, the number immediately preceding $70,010$ is $70,009$.

Given the answer choices, the correct choice is:
Choice 4: $70,009$.