Finding the Fourth Proportional to 105,920.66, 146,171.52 and 58,175

Step by Step Solution

1. Step 1: Write the proportion equation
   105,920.66 : 146,171.52 = 58,175 : x
2. Step 2: Convert to fraction form
   105,920.66/146,171.52 = 58,175/x
3. Step 3: Cross multiply
   105,920.66x = 146,171.52 × 58,175
4. Step 4: Simplify right side
   105,920.66x = 8,503,528,176.00
5. Step 5: Solve for x
   x = 8,503,528,176.00/105,920.66
6. Step 6: Final answer
   x = 80,282.05