Finding the Fourth Proportional to 259,517,445,796.28, 389,388,036,104.55 and 140,111,062,329.98

Step by Step Solution

1. Step 1: Write the proportion equation
   259,517,445,796.28 : 389,388,036,104.55 = 140,111,062,329.98 : x
2. Step 2: Convert to fraction form
   259,517,445,796.28/389,388,036,104.55 = 140,111,062,329.98/x
3. Step 3: Cross multiply
   259,517,445,796.28x = 389,388,036,104.55 × 140,111,062,329.98
4. Step 4: Simplify right side
   259,517,445,796.28x = 54,557,571,397,193,113,272,320
5. Step 5: Solve for x
   x = 54,557,571,397,193,113,272,320/259,517,445,796.28
6. Step 6: Final answer
   x = 210,226,989,672.29