Finding the Fourth Proportional to 2,116,979,314.91, 2,921,433,876.59 and 1,177,161,778.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116,979,314.91 : 2,921,433,876.59 = 1,177,161,778.61 : x
2. Step 2: Convert to fraction form
   2,116,979,314.91/2,921,433,876.59 = 1,177,161,778.61/x
3. Step 3: Cross multiply
   2,116,979,314.91x = 2,921,433,876.59 × 1,177,161,778.61
4. Step 4: Simplify right side
   2,116,979,314.91x = 3,439,000,298,252,305,408
5. Step 5: Solve for x
   x = 3,439,000,298,252,305,408/2,116,979,314.91
6. Step 6: Final answer
   x = 1,624,484,601.26