Finding the Fourth Proportional to 105,820.92, 146,034.63 and 58,078.71

Step by Step Solution

1. Step 1: Write the proportion equation
   105,820.92 : 146,034.63 = 58,078.71 : x
2. Step 2: Convert to fraction form
   105,820.92/146,034.63 = 58,078.71/x
3. Step 3: Cross multiply
   105,820.92x = 146,034.63 × 58,078.71
4. Step 4: Simplify right side
   105,820.92x = 8,481,502,925.73
5. Step 5: Solve for x
   x = 8,481,502,925.73/105,820.92
6. Step 6: Final answer
   x = 80,149.59