Finding the Fourth Proportional to 21,661,051,182.57, 29,881,249,377.57 and 14,147,070,656.49

Step by Step Solution

1. Step 1: Write the proportion equation
   21,661,051,182.57 : 29,881,249,377.57 = 14,147,070,656.49 : x
2. Step 2: Convert to fraction form
   21,661,051,182.57/29,881,249,377.57 = 14,147,070,656.49/x
3. Step 3: Cross multiply
   21,661,051,182.57x = 29,881,249,377.57 × 14,147,070,656.49
4. Step 4: Simplify right side
   21,661,051,182.57x = 422,732,146,248,680,603,648
5. Step 5: Solve for x
   x = 422,732,146,248,680,603,648/21,661,051,182.57
6. Step 6: Final answer
   x = 19,515,772,465.78