Finding the Fourth Proportional to 105,922.72, 146,172.90 and 58,177

Step by Step Solution

1. Step 1: Write the proportion equation
   105,922.72 : 146,172.90 = 58,177 : x
2. Step 2: Convert to fraction form
   105,922.72/146,172.90 = 58,177/x
3. Step 3: Cross multiply
   105,922.72x = 146,172.90 × 58,177
4. Step 4: Simplify right side
   105,922.72x = 8,503,900,803.30
5. Step 5: Solve for x
   x = 8,503,900,803.30/105,922.72
6. Step 6: Final answer
   x = 80,284.01