Finding the Fourth Proportional to 307,978.74, 461,887.91 and 130,394.34

Step by Step Solution

1. Step 1: Write the proportion equation
   307,978.74 : 461,887.91 = 130,394.34 : x
2. Step 2: Convert to fraction form
   307,978.74/461,887.91 = 130,394.34/x
3. Step 3: Cross multiply
   307,978.74x = 461,887.91 × 130,394.34
4. Step 4: Simplify right side
   307,978.74x = 60,227,569,178.43
5. Step 5: Solve for x
   x = 60,227,569,178.43/307,978.74
6. Step 6: Final answer
   x = 195,557.55