Finding the Fourth Proportional to 331,090.72, 456,900.78 and 195,130.42

Step by Step Solution

1. Step 1: Write the proportion equation
   331,090.72 : 456,900.78 = 195,130.42 : x
2. Step 2: Convert to fraction form
   331,090.72/456,900.78 = 195,130.42/x
3. Step 3: Cross multiply
   331,090.72x = 456,900.78 × 195,130.42
4. Step 4: Simplify right side
   331,090.72x = 89,155,241,099.73
5. Step 5: Solve for x
   x = 89,155,241,099.73/331,090.72
6. Step 6: Final answer
   x = 269,277.38