Finding the Fourth Proportional to 133,789.69, 200,290.86 and 89,306.11

Step by Step Solution

1. Step 1: Write the proportion equation
   133,789.69 : 200,290.86 = 89,306.11 : x
2. Step 2: Convert to fraction form
   133,789.69/200,290.86 = 89,306.11/x
3. Step 3: Cross multiply
   133,789.69x = 200,290.86 × 89,306.11
4. Step 4: Simplify right side
   133,789.69x = 17,887,196,573.70
5. Step 5: Solve for x
   x = 17,887,196,573.70/133,789.69
6. Step 6: Final answer
   x = 133,696.38