Finding the Fourth Proportional to 107,445.93, 161,168.70 and 28,560.15

Step by Step Solution

1. Step 1: Write the proportion equation
   107,445.93 : 161,168.70 = 28,560.15 : x
2. Step 2: Convert to fraction form
   107,445.93/161,168.70 = 28,560.15/x
3. Step 3: Cross multiply
   107,445.93x = 161,168.70 × 28,560.15
4. Step 4: Simplify right side
   107,445.93x = 4,603,002,247.31
5. Step 5: Solve for x
   x = 4,603,002,247.31/107,445.93
6. Step 6: Final answer
   x = 42,840.17