Finding the Fourth Proportional to 21,142,216,941.06, 29,177,026,498.79 and 12,111,720,363.19

Step by Step Solution

1. Step 1: Write the proportion equation
   21,142,216,941.06 : 29,177,026,498.79 = 12,111,720,363.19 : x
2. Step 2: Convert to fraction form
   21,142,216,941.06/29,177,026,498.79 = 12,111,720,363.19/x
3. Step 3: Cross multiply
   21,142,216,941.06x = 29,177,026,498.79 × 12,111,720,363.19
4. Step 4: Simplify right side
   21,142,216,941.06x = 353,383,985,982,758,256,640
5. Step 5: Solve for x
   x = 353,383,985,982,758,256,640/21,142,216,941.06
6. Step 6: Final answer
   x = 16,714,613,560.53