4. How do you write this number? 78,000 setenta mil ochocientos setecientos ochenta setenta y ocho mil siete mil ochenta

## Step 1<br />The problem asks us to identify the correct written form of the number 78,000 from the given options. The number 78,000 is a four-digit number, which means it falls into the category of thousands. In Spanish, the word for thousands is "mil".<br />## Step 2<br />The number 78,000 is composed of 78 thousands. In Spanish, 78 is written as "setenta y ocho".<br />## Step 3<br />Combining the word for thousands "mil" with the number 78, we get "setenta y ocho mil".<br />## Step 4<br />Therefore, the correct written form of the number 78,000 in Spanish is "setenta y ocho mil".