Finding the Fourth Proportional to 111,168.69, 153,428.09 and 68,173.89

Step by Step Solution

1. Step 1: Write the proportion equation
   111,168.69 : 153,428.09 = 68,173.89 : x
2. Step 2: Convert to fraction form
   111,168.69/153,428.09 = 68,173.89/x
3. Step 3: Cross multiply
   111,168.69x = 153,428.09 × 68,173.89
4. Step 4: Simplify right side
   111,168.69x = 10,459,789,730.57
5. Step 5: Solve for x
   x = 10,459,789,730.57/111,168.69
6. Step 6: Final answer
   x = 94,089.35