Finding the Fourth Proportional to 105,969.98, 146,245.56 and 58,223.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,969.98 : 146,245.56 = 58,223.72 : x
2. Step 2: Convert to fraction form
   105,969.98/146,245.56 = 58,223.72/x
3. Step 3: Cross multiply
   105,969.98x = 146,245.56 × 58,223.72
4. Step 4: Simplify right side
   105,969.98x = 8,514,960,536.68
5. Step 5: Solve for x
   x = 8,514,960,536.68/105,969.98
6. Step 6: Final answer
   x = 80,352.57