Finding the Fourth Proportional to 107,814.10, 161,721.15 and 82,902.10

Step by Step Solution

1. Step 1: Write the proportion equation
   107,814.10 : 161,721.15 = 82,902.10 : x
2. Step 2: Convert to fraction form
   107,814.10/161,721.15 = 82,902.10/x
3. Step 3: Cross multiply
   107,814.10x = 161,721.15 × 82,902.10
4. Step 4: Simplify right side
   107,814.10x = 13,407,022,949.42
5. Step 5: Solve for x
   x = 13,407,022,949.42/107,814.10
6. Step 6: Final answer
   x = 124,353.15