In Numbers 23:10 (KJV)
Who can count the dust of Jacob, and the number of the fourth part of Israel? Let me die the death of the righteous, and let my last end be like his!
The original word is rōḇaʿ. Checked in NLT, NASB, NIV, ESV and they all use the word "fourth". Interestingly, ESV mentions "or dust clouds".
How was the decision to select between "fourth" and "dust clouds" done?