Finding the Fourth Proportional to 19,329,755,451.54, 26,659,950,753.89 and 12,557,755,956.15

Step by Step Solution

1. Step 1: Write the proportion equation
   19,329,755,451.54 : 26,659,950,753.89 = 12,557,755,956.15 : x
2. Step 2: Convert to fraction form
   19,329,755,451.54/26,659,950,753.89 = 12,557,755,956.15/x
3. Step 3: Cross multiply
   19,329,755,451.54x = 26,659,950,753.89 × 12,557,755,956.15
4. Step 4: Simplify right side
   19,329,755,451.54x = 334,789,155,370,365,485,056
5. Step 5: Solve for x
   x = 334,789,155,370,365,485,056/19,329,755,451.54
6. Step 6: Final answer
   x = 17,319,885,717.63