Finding the Fourth Proportional to 106,287, 146,682.72 and 58,540.34

Step by Step Solution

1. Step 1: Write the proportion equation
   106,287 : 146,682.72 = 58,540.34 : x
2. Step 2: Convert to fraction form
   106,287/146,682.72 = 58,540.34/x
3. Step 3: Cross multiply
   106,287x = 146,682.72 × 58,540.34
4. Step 4: Simplify right side
   106,287x = 8,586,856,300.92
5. Step 5: Solve for x
   x = 8,586,856,300.92/106,287
6. Step 6: Final answer
   x = 80,789.34