Finding the Fourth Proportional to 200,719.69, 301,196.17 and 89,911.69

Step by Step Solution

1. Step 1: Write the proportion equation
   200,719.69 : 301,196.17 = 89,911.69 : x
2. Step 2: Convert to fraction form
   200,719.69/301,196.17 = 89,911.69/x
3. Step 3: Cross multiply
   200,719.69x = 301,196.17 × 89,911.69
4. Step 4: Simplify right side
   200,719.69x = 27,081,056,025.63
5. Step 5: Solve for x
   x = 27,081,056,025.63/200,719.69
6. Step 6: Final answer
   x = 134,919.78