107.91 centimeters is equal to 42.52 inches. This is just slightly larger than the average height of an American three year old child, which is about 37-38 inches tall. It is also slightly smaller than the average height of a four year old child, which is about 40 inches tall. Additionally, 107.91 centimeters is approximately the length of a standard acoustic guitar, which is typically around 42 inches in overall length.