Finding the Fourth Proportional to 107,672.78, 161,496.84 and 28,793.15

Step by Step Solution

1. Step 1: Write the proportion equation
   107,672.78 : 161,496.84 = 28,793.15 : x
2. Step 2: Convert to fraction form
   107,672.78/161,496.84 = 28,793.15/x
3. Step 3: Cross multiply
   107,672.78x = 161,496.84 × 28,793.15
4. Step 4: Simplify right side
   107,672.78x = 4,650,002,738.65
5. Step 5: Solve for x
   x = 4,650,002,738.65/107,672.78
6. Step 6: Final answer
   x = 43,186.43