Finding the Fourth Proportional to 259,371, 357,931.98 and 140,139

Step by Step Solution

1. Step 1: Write the proportion equation
   259,371 : 357,931.98 = 140,139 : x
2. Step 2: Convert to fraction form
   259,371/357,931.98 = 140,139/x
3. Step 3: Cross multiply
   259,371x = 357,931.98 × 140,139
4. Step 4: Simplify right side
   259,371x = 50,160,229,745.22
5. Step 5: Solve for x
   x = 50,160,229,745.22/259,371
6. Step 6: Final answer
   x = 193,391.82