Finding the Fourth Proportional to 105,822.90, 146,031 and 58,077.06

Step by Step Solution

1. Step 1: Write the proportion equation
   105,822.90 : 146,031 = 58,077.06 : x
2. Step 2: Convert to fraction form
   105,822.90/146,031 = 58,077.06/x
3. Step 3: Cross multiply
   105,822.90x = 146,031 × 58,077.06
4. Step 4: Simplify right side
   105,822.90x = 8,481,051,148.86
5. Step 5: Solve for x
   x = 8,481,051,148.86/105,822.90
6. Step 6: Final answer
   x = 80,143.82