Finding the Fourth Proportional to 21,554,663,454.87, 29,745,119,005.98 and 12,039,354,067.47

Step by Step Solution

1. Step 1: Write the proportion equation
   21,554,663,454.87 : 29,745,119,005.98 = 12,039,354,067.47 : x
2. Step 2: Convert to fraction form
   21,554,663,454.87/29,745,119,005.98 = 12,039,354,067.47/x
3. Step 3: Cross multiply
   21,554,663,454.87x = 29,745,119,005.98 × 12,039,354,067.47
4. Step 4: Simplify right side
   21,554,663,454.87x = 358,112,019,492,024,483,840
5. Step 5: Solve for x
   x = 358,112,019,492,024,483,840/21,554,663,454.87
6. Step 6: Final answer
   x = 16,614,131,797.60