Finding the Fourth Proportional to 105,805.46, 146,006.52 and 58,057.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,805.46 : 146,006.52 = 58,057.76 : x
2. Step 2: Convert to fraction form
   105,805.46/146,006.52 = 58,057.76/x
3. Step 3: Cross multiply
   105,805.46x = 146,006.52 × 58,057.76
4. Step 4: Simplify right side
   105,805.46x = 8,476,811,496.60
5. Step 5: Solve for x
   x = 8,476,811,496.60/105,805.46
6. Step 6: Final answer
   x = 80,116.96