Finding the Fourth Proportional to 107,091.60, 160,645.28 and 28,205.25

Step by Step Solution

1. Step 1: Write the proportion equation
   107,091.60 : 160,645.28 = 28,205.25 : x
2. Step 2: Convert to fraction form
   107,091.60/160,645.28 = 28,205.25/x
3. Step 3: Cross multiply
   107,091.60x = 160,645.28 × 28,205.25
4. Step 4: Simplify right side
   107,091.60x = 4,531,040,142.69
5. Step 5: Solve for x
   x = 4,531,040,142.69/107,091.60
6. Step 6: Final answer
   x = 42,309.95