Finding the Fourth Proportional to 123,142.68, 170,077.07 and 82,786.38

Step by Step Solution

1. Step 1: Write the proportion equation
   123,142.68 : 170,077.07 = 82,786.38 : x
2. Step 2: Convert to fraction form
   123,142.68/170,077.07 = 82,786.38/x
3. Step 3: Cross multiply
   123,142.68x = 170,077.07 × 82,786.38
4. Step 4: Simplify right side
   123,142.68x = 14,080,064,528.15
5. Step 5: Solve for x
   x = 14,080,064,528.15/123,142.68
6. Step 6: Final answer
   x = 114,339.44