Finding the Fourth Proportional to 105,821.98, 146,029.52 and 58,074.38

Step by Step Solution

1. Step 1: Write the proportion equation
   105,821.98 : 146,029.52 = 58,074.38 : x
2. Step 2: Convert to fraction form
   105,821.98/146,029.52 = 58,074.38/x
3. Step 3: Cross multiply
   105,821.98x = 146,029.52 × 58,074.38
4. Step 4: Simplify right side
   105,821.98x = 8,480,573,835.70
5. Step 5: Solve for x
   x = 8,480,573,835.70/105,821.98
6. Step 6: Final answer
   x = 80,140.00