Henry Ernest Dudeney/Puzzles and Curious Problems/234 - Pile Driving

by : $234$

 * Pile Driving
 * During some bridge-building operations a pile was being driven into the bed of the river.
 * A foreman remarked that at high water a quarter of the pile was embedded in the mud,
 * one-third was under water,
 * and $17$ feet $6$ inches above water.


 * What was the length of the pile?