Finding the Fourth Proportional to 111,166.69, 153,425.33 and 68,171.89

Step by Step Solution

1. Step 1: Write the proportion equation
   111,166.69 : 153,425.33 = 68,171.89 : x
2. Step 2: Convert to fraction form
   111,166.69/153,425.33 = 68,171.89/x
3. Step 3: Cross multiply
   111,166.69x = 153,425.33 × 68,171.89
4. Step 4: Simplify right side
   111,166.69x = 10,459,294,719.97
5. Step 5: Solve for x
   x = 10,459,294,719.97/111,166.69
6. Step 6: Final answer
   x = 94,086.59