Finding the Fourth Proportional to 308,978.34, 463,093.25 and 131,111.70

Step by Step Solution

1. Step 1: Write the proportion equation
   308,978.34 : 463,093.25 = 131,111.70 : x
2. Step 2: Convert to fraction form
   308,978.34/463,093.25 = 131,111.70/x
3. Step 3: Cross multiply
   308,978.34x = 463,093.25 × 131,111.70
4. Step 4: Simplify right side
   308,978.34x = 60,716,942,610.47
5. Step 5: Solve for x
   x = 60,716,942,610.47/308,978.34
6. Step 6: Final answer
   x = 196,508.73