Finding the Fourth Proportional to 2,359,478,796.66, 3,538,823,600.25 and 865,201,558.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359,478,796.66 : 3,538,823,600.25 = 865,201,558.05 : x
2. Step 2: Convert to fraction form
   2,359,478,796.66/3,538,823,600.25 = 865,201,558.05/x
3. Step 3: Cross multiply
   2,359,478,796.66x = 3,538,823,600.25 × 865,201,558.05
4. Step 4: Simplify right side
   2,359,478,796.66x = 3,061,795,692,600,410,112
5. Step 5: Solve for x
   x = 3,061,795,692,600,410,112/2,359,478,796.66
6. Step 6: Final answer
   x = 1,297,657,642.41