Finding the Fourth Proportional to 107,156.71, 160,722.76 and 28,277.09

Step by Step Solution

1. Step 1: Write the proportion equation
   107,156.71 : 160,722.76 = 28,277.09 : x
2. Step 2: Convert to fraction form
   107,156.71/160,722.76 = 28,277.09/x
3. Step 3: Cross multiply
   107,156.71x = 160,722.76 × 28,277.09
4. Step 4: Simplify right side
   107,156.71x = 4,544,772,103.50
5. Step 5: Solve for x
   x = 4,544,772,103.50/107,156.71
6. Step 6: Final answer
   x = 42,412.39