Finding the Fourth Proportional to 105,759.88, 145,948.89 and 58,013.62

Step by Step Solution

1. Step 1: Write the proportion equation
   105,759.88 : 145,948.89 = 58,013.62 : x
2. Step 2: Convert to fraction form
   105,759.88/145,948.89 = 58,013.62/x
3. Step 3: Cross multiply
   105,759.88x = 145,948.89 × 58,013.62
4. Step 4: Simplify right side
   105,759.88x = 8,467,023,443.88
5. Step 5: Solve for x
   x = 8,467,023,443.88/105,759.88
6. Step 6: Final answer
   x = 80,058.94