Finding the Fourth Proportional to 259,978.17, 389,718.14 and 110,012.14

Step by Step Solution

1. Step 1: Write the proportion equation
   259,978.17 : 389,718.14 = 110,012.14 : x
2. Step 2: Convert to fraction form
   259,978.17/389,718.14 = 110,012.14/x
3. Step 3: Cross multiply
   259,978.17x = 389,718.14 × 110,012.14
4. Step 4: Simplify right side
   259,978.17x = 42,873,726,515.31
5. Step 5: Solve for x
   x = 42,873,726,515.31/259,978.17
6. Step 6: Final answer
   x = 164,912.79