Finding the Fourth Proportional to 28,194,982,609.35, 42,309,869,617.17 and 13,065,731,995.42

Step by Step Solution

1. Step 1: Write the proportion equation
   28,194,982,609.35 : 42,309,869,617.17 = 13,065,731,995.42 : x
2. Step 2: Convert to fraction form
   28,194,982,609.35/42,309,869,617.17 = 13,065,731,995.42/x
3. Step 3: Cross multiply
   28,194,982,609.35x = 42,309,869,617.17 × 13,065,731,995.42
4. Step 4: Simplify right side
   28,194,982,609.35x = 552,809,417,179,041,300,480
5. Step 5: Solve for x
   x = 552,809,417,179,041,300,480/28,194,982,609.35
6. Step 6: Final answer
   x = 19,606,659,271.20