Finding the Fourth Proportional to 21,061,736,920.50, 29,065,571,445.69 and 11,416,782,780.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061,736,920.50 : 29,065,571,445.69 = 11,416,782,780.06 : x
2. Step 2: Convert to fraction form
   21,061,736,920.50/29,065,571,445.69 = 11,416,782,780.06/x
3. Step 3: Cross multiply
   21,061,736,920.50x = 29,065,571,445.69 × 11,416,782,780.06
4. Step 4: Simplify right side
   21,061,736,920.50x = 331,835,315,573,757,181,952
5. Step 5: Solve for x
   x = 331,835,315,573,757,181,952/21,061,736,920.50
6. Step 6: Final answer
   x = 15,755,363,236.48