Finding the Fourth Proportional to 307,978.49, 461,887.53 and 130,394.09

Step by Step Solution

1. Step 1: Write the proportion equation
   307,978.49 : 461,887.53 = 130,394.09 : x
2. Step 2: Convert to fraction form
   307,978.49/461,887.53 = 130,394.09/x
3. Step 3: Cross multiply
   307,978.49x = 461,887.53 × 130,394.09
4. Step 4: Simplify right side
   307,978.49x = 60,227,404,156.70
5. Step 5: Solve for x
   x = 60,227,404,156.70/307,978.49
6. Step 6: Final answer
   x = 195,557.18