Finding the Fourth Proportional to 111,665.71, 154,036.28 and 68,615.29

Step by Step Solution

1. Step 1: Write the proportion equation
   111,665.71 : 154,036.28 = 68,615.29 : x
2. Step 2: Convert to fraction form
   111,665.71/154,036.28 = 68,615.29/x
3. Step 3: Cross multiply
   111,665.71x = 154,036.28 × 68,615.29
4. Step 4: Simplify right side
   111,665.71x = 10,569,244,386.80
5. Step 5: Solve for x
   x = 10,569,244,386.80/111,665.71
6. Step 6: Final answer
   x = 94,650.76