Finding the Fourth Proportional to 307,805.72, 461,734.90 and 108,108.72

Step by Step Solution

1. Step 1: Write the proportion equation
   307,805.72 : 461,734.90 = 108,108.72 : x
2. Step 2: Convert to fraction form
   307,805.72/461,734.90 = 108,108.72/x
3. Step 3: Cross multiply
   307,805.72x = 461,734.90 × 108,108.72
4. Step 4: Simplify right side
   307,805.72x = 49,917,569,018.33
5. Step 5: Solve for x
   x = 49,917,569,018.33/307,805.72
6. Step 6: Final answer
   x = 162,172.32