What approximate value will come in place of question mark (?) in the following questions? (You are not expected to calculate the exact value)

$\sqrt{21.98\times 30.09+123.90}=?÷4$

The correct answer is 112.

We are asked to find the approximate value of the question mark (?) in the following expression:
$\sqrt{21.98\times 30.09+123.90}=?÷4$

To solve this, we can round each decimal number to its nearest integer to simplify calculations:
1. $21.98\approx 22$
2. $30.09\approx 30$
3. $123.90���124$

Now, substitute these approximate values back into the expression under the square root:
$22\times 30+124$

Following the order of operations, we first perform the multiplication:
$22\times 30=660$

Next, we add 124:
$660+124=784$

Now, calculate the square root of 784:
$\sqrt{784}=28$
(since ${28}^2=784$)

Substitute this value back into the main equation:
$28=?÷4$

To find the value of ?, multiply both sides by 4:
$?=28\times 4$
$?=112$

Therefore, the approximate value that should come in place of the question mark is 112.