Finding the Fourth Proportional to 15,856,572,870.84, 21,875,877,363.42 and 9,078,769,120.14

Step by Step Solution

1. Step 1: Write the proportion equation
   15,856,572,870.84 : 21,875,877,363.42 = 9,078,769,120.14 : x
2. Step 2: Convert to fraction form
   15,856,572,870.84/21,875,877,363.42 = 9,078,769,120.14/x
3. Step 3: Cross multiply
   15,856,572,870.84x = 21,875,877,363.42 × 9,078,769,120.14
4. Step 4: Simplify right side
   15,856,572,870.84x = 198,606,039,882,987,110,400
5. Step 5: Solve for x
   x = 198,606,039,882,987,110,400/15,856,572,870.84
6. Step 6: Final answer
   x = 12,525,155,435.59