Finding the Fourth Proportional to 105,851.30, 146,076.46 and 58,109

Step by Step Solution

1. Step 1: Write the proportion equation
   105,851.30 : 146,076.46 = 58,109 : x
2. Step 2: Convert to fraction form
   105,851.30/146,076.46 = 58,109/x
3. Step 3: Cross multiply
   105,851.30x = 146,076.46 × 58,109
4. Step 4: Simplify right side
   105,851.30x = 8,488,357,014.14
5. Step 5: Solve for x
   x = 8,488,357,014.14/105,851.30
6. Step 6: Final answer
   x = 80,191.33