Finding the Fourth Proportional to 105,491.20, 158,238.40 and 34,413.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,491.20 : 158,238.40 = 34,413.52 : x
2. Step 2: Convert to fraction form
   105,491.20/158,238.40 = 34,413.52/x
3. Step 3: Cross multiply
   105,491.20x = 158,238.40 × 34,413.52
4. Step 4: Simplify right side
   105,491.20x = 5,445,540,343.17
5. Step 5: Solve for x
   x = 5,445,540,343.17/105,491.20
6. Step 6: Final answer
   x = 51,620.80