Finding the Fourth Proportional to 105,819.98, 146,026.76 and 58,072.38

Step by Step Solution

1. Step 1: Write the proportion equation
   105,819.98 : 146,026.76 = 58,072.38 : x
2. Step 2: Convert to fraction form
   105,819.98/146,026.76 = 58,072.38/x
3. Step 3: Cross multiply
   105,819.98x = 146,026.76 × 58,072.38
4. Step 4: Simplify right side
   105,819.98x = 8,480,121,496.89
5. Step 5: Solve for x
   x = 8,480,121,496.89/105,819.98
6. Step 6: Final answer
   x = 80,137.24