Finding the Fourth Proportional to 82,849.12, 124,284.18 and 81,566.80

Step by Step Solution

1. Step 1: Write the proportion equation
   82,849.12 : 124,284.18 = 81,566.80 : x
2. Step 2: Convert to fraction form
   82,849.12/124,284.18 = 81,566.80/x
3. Step 3: Cross multiply
   82,849.12x = 124,284.18 × 81,566.80
4. Step 4: Simplify right side
   82,849.12x = 10,137,462,853.22
5. Step 5: Solve for x
   x = 10,137,462,853.22/82,849.12
6. Step 6: Final answer
   x = 122,360.54