Finding the Fourth Proportional to 105,817.34, 146,032.12 and 58,072.38

Step by Step Solution

1. Step 1: Write the proportion equation
   105,817.34 : 146,032.12 = 58,072.38 : x
2. Step 2: Convert to fraction form
   105,817.34/146,032.12 = 58,072.38/x
3. Step 3: Cross multiply
   105,817.34x = 146,032.12 × 58,072.38
4. Step 4: Simplify right side
   105,817.34x = 8,480,432,764.85
5. Step 5: Solve for x
   x = 8,480,432,764.85/105,817.34
6. Step 6: Final answer
   x = 80,142.18