Finding the Fourth Proportional to 103,520.82, 142,859.31 and 58,198.38

Step by Step Solution

1. Step 1: Write the proportion equation
   103,520.82 : 142,859.31 = 58,198.38 : x
2. Step 2: Convert to fraction form
   103,520.82/142,859.31 = 58,198.38/x
3. Step 3: Cross multiply
   103,520.82x = 142,859.31 × 58,198.38
4. Step 4: Simplify right side
   103,520.82x = 8,314,180,409.92
5. Step 5: Solve for x
   x = 8,314,180,409.92/103,520.82
6. Step 6: Final answer
   x = 80,314.09