Finding the Fourth Proportional to 89,636.22, 134,276.13 and 82,287.90

Step by Step Solution

1. Step 1: Write the proportion equation
   89,636.22 : 134,276.13 = 82,287.90 : x
2. Step 2: Convert to fraction form
   89,636.22/134,276.13 = 82,287.90/x
3. Step 3: Cross multiply
   89,636.22x = 134,276.13 × 82,287.90
4. Step 4: Simplify right side
   89,636.22x = 11,049,300,757.83
5. Step 5: Solve for x
   x = 11,049,300,757.83/89,636.22
6. Step 6: Final answer
   x = 123,268.26