Finding the Fourth Proportional to 113,105.15, 169,657.61 and 28,865.31

Step by Step Solution

1. Step 1: Write the proportion equation
   113,105.15 : 169,657.61 = 28,865.31 : x
2. Step 2: Convert to fraction form
   113,105.15/169,657.61 = 28,865.31/x
3. Step 3: Cross multiply
   113,105.15x = 169,657.61 × 28,865.31
4. Step 4: Simplify right side
   113,105.15x = 4,897,219,362.18
5. Step 5: Solve for x
   x = 4,897,219,362.18/113,105.15
6. Step 6: Final answer
   x = 43,297.94