Finding the Fourth Proportional to 107,318.52, 160,959.42 and 28,440.72

Step by Step Solution

1. Step 1: Write the proportion equation
   107,318.52 : 160,959.42 = 28,440.72 : x
2. Step 2: Convert to fraction form
   107,318.52/160,959.42 = 28,440.72/x
3. Step 3: Cross multiply
   107,318.52x = 160,959.42 × 28,440.72
4. Step 4: Simplify right side
   107,318.52x = 4,577,801,795.58
5. Step 5: Solve for x
   x = 4,577,801,795.58/107,318.52
6. Step 6: Final answer
   x = 42,656.21