Finding the Fourth Proportional to 259,014.27, 388,502.43 and 81,572.02

Step by Step Solution

1. Step 1: Write the proportion equation
   259,014.27 : 388,502.43 = 81,572.02 : x
2. Step 2: Convert to fraction form
   259,014.27/388,502.43 = 81,572.02/x
3. Step 3: Cross multiply
   259,014.27x = 388,502.43 × 81,572.02
4. Step 4: Simplify right side
   259,014.27x = 31,690,928,493.78
5. Step 5: Solve for x
   x = 31,690,928,493.78/259,014.27
6. Step 6: Final answer
   x = 122,352.06