0,9434. to 0,00000348.
To 15 in 16 in 18, or 4320, for the second Year, so 0,8900. to 0,00002462.
To 21 in 24 in 28, or 14112 for the third Year, so 0,8396. to 0,00008128.
To 27 in 32 in 38, for the fourth Year, so 0,7921. to 0,00016650.
To 33 in 41 in 48, for the fifth Year, so 0,7473. to 0,00031071.
To 39 in 50 in 58, for the sixth Year, so 0,7050. to 0,00051051.
And so forth to the 60th Year, when we suppose the elder Life of Forty certainly to be expired; from whence till Seventy we must compute for the First and Second only, and from thence to Ninety for the single youngest Life. Then the Sum Total of all these Fourth Proportionals being taken out of the Value of a certain Annuity for 90 Years, being 16,58 Years Purchase, shall leave the just Value to be paid for an Annuity during the whole Term of the Lives of Three Persons of the Ages proposed.