Finding the Fourth Proportional to 21,342,146,662.10, 29,442,504,622.04 and 12,881,265,819.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,342,146,662.10 : 29,442,504,622.04 = 12,881,265,819.86 : x
2. Step 2: Convert to fraction form
   21,342,146,662.10/29,442,504,622.04 = 12,881,265,819.86/x
3. Step 3: Cross multiply
   21,342,146,662.10x = 29,442,504,622.04 × 12,881,265,819.86
4. Step 4: Simplify right side
   21,342,146,662.10x = 379,256,728,438,953,934,848
5. Step 5: Solve for x
   x = 379,256,728,438,953,934,848/21,342,146,662.10
6. Step 6: Final answer
   x = 17,770,317,786.84