Finding the Fourth Proportional to 85,141.74, 127,515.78 and 82,189.29

Step by Step Solution

1. Step 1: Write the proportion equation
   85,141.74 : 127,515.78 = 82,189.29 : x
2. Step 2: Convert to fraction form
   85,141.74/127,515.78 = 82,189.29/x
3. Step 3: Cross multiply
   85,141.74x = 127,515.78 × 82,189.29
4. Step 4: Simplify right side
   85,141.74x = 10,480,431,422.00
5. Step 5: Solve for x
   x = 10,480,431,422.00/85,141.74
6. Step 6: Final answer
   x = 123,093.93