Finding the Fourth Proportional to 107,078.67, 160,626.20 and 28,191.75

Step by Step Solution

1. Step 1: Write the proportion equation
   107,078.67 : 160,626.20 = 28,191.75 : x
2. Step 2: Convert to fraction form
   107,078.67/160,626.20 = 28,191.75/x
3. Step 3: Cross multiply
   107,078.67x = 160,626.20 × 28,191.75
4. Step 4: Simplify right side
   107,078.67x = 4,528,333,532.89
5. Step 5: Solve for x
   x = 4,528,333,532.89/107,078.67
6. Step 6: Final answer
   x = 42,289.78