Finding the Fourth Proportional to 2,512,191,978.81, 3,768,849,991.94 and 765,531,416.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,512,191,978.81 : 3,768,849,991.94 = 765,531,416.25 : x
2. Step 2: Convert to fraction form
   2,512,191,978.81/3,768,849,991.94 = 765,531,416.25/x
3. Step 3: Cross multiply
   2,512,191,978.81x = 3,768,849,991.94 × 765,531,416.25
4. Step 4: Simplify right side
   2,512,191,978.81x = 2,885,173,071,959,801,344
5. Step 5: Solve for x
   x = 2,885,173,071,959,801,344/2,512,191,978.81
6. Step 6: Final answer
   x = 1,148,468,387.88