Finding the Fourth Proportional to 107,426.15, 161,141.92 and 28,540.25

Step by Step Solution

1. Step 1: Write the proportion equation
   107,426.15 : 161,141.92 = 28,540.25 : x
2. Step 2: Convert to fraction form
   107,426.15/161,141.92 = 28,540.25/x
3. Step 3: Cross multiply
   107,426.15x = 161,141.92 × 28,540.25
4. Step 4: Simplify right side
   107,426.15x = 4,599,029,805.22
5. Step 5: Solve for x
   x = 4,599,029,805.22/107,426.15
6. Step 6: Final answer
   x = 42,811.08