Finding the Fourth Proportional to 106,443.36, 146,891.79 and 61,124.31

Step by Step Solution

1. Step 1: Write the proportion equation
   106,443.36 : 146,891.79 = 61,124.31 : x
2. Step 2: Convert to fraction form
   106,443.36/146,891.79 = 61,124.31/x
3. Step 3: Cross multiply
   106,443.36x = 146,891.79 × 61,124.31
4. Step 4: Simplify right side
   106,443.36x = 8,978,659,308.41
5. Step 5: Solve for x
   x = 8,978,659,308.41/106,443.36
6. Step 6: Final answer
   x = 84,351.52