Finding the Fourth Proportional to 115,448.78, 159,355.61 and 67,721.42

Step by Step Solution

1. Step 1: Write the proportion equation
   115,448.78 : 159,355.61 = 67,721.42 : x
2. Step 2: Convert to fraction form
   115,448.78/159,355.61 = 67,721.42/x
3. Step 3: Cross multiply
   115,448.78x = 159,355.61 × 67,721.42
4. Step 4: Simplify right side
   115,448.78x = 10,791,787,058.78
5. Step 5: Solve for x
   x = 10,791,787,058.78/115,448.78
6. Step 6: Final answer
   x = 93,476.84