Finding the Fourth Proportional to 107,411.10, 161,116.65 and 82,499.10

Step by Step Solution

1. Step 1: Write the proportion equation
   107,411.10 : 161,116.65 = 82,499.10 : x
2. Step 2: Convert to fraction form
   107,411.10/161,116.65 = 82,499.10/x
3. Step 3: Cross multiply
   107,411.10x = 161,116.65 × 82,499.10
4. Step 4: Simplify right side
   107,411.10x = 13,291,978,620.02
5. Step 5: Solve for x
   x = 13,291,978,620.02/107,411.10
6. Step 6: Final answer
   x = 123,748.65