Finding the Fourth Proportional to 113,229.18, 169,804.89 and 43,128.54

Step by Step Solution

1. Step 1: Write the proportion equation
   113,229.18 : 169,804.89 = 43,128.54 : x
2. Step 2: Convert to fraction form
   113,229.18/169,804.89 = 43,128.54/x
3. Step 3: Cross multiply
   113,229.18x = 169,804.89 × 43,128.54
4. Step 4: Simplify right side
   113,229.18x = 7,323,436,990.56
5. Step 5: Solve for x
   x = 7,323,436,990.56/113,229.18
6. Step 6: Final answer
   x = 64,678.00