Finding the Fourth Proportional to 296,443.89, 444,678.17 and 86,081.85

Step by Step Solution

1. Step 1: Write the proportion equation
   296,443.89 : 444,678.17 = 86,081.85 : x
2. Step 2: Convert to fraction form
   296,443.89/444,678.17 = 86,081.85/x
3. Step 3: Cross multiply
   296,443.89x = 444,678.17 × 86,081.85
4. Step 4: Simplify right side
   296,443.89x = 38,278,719,097.81
5. Step 5: Solve for x
   x = 38,278,719,097.81/296,443.89
6. Step 6: Final answer
   x = 129,126.36