Finding the Fourth Proportional to 105,886.71, 146,123.82 and 58,143.15

Step by Step Solution

1. Step 1: Write the proportion equation
   105,886.71 : 146,123.82 = 58,143.15 : x
2. Step 2: Convert to fraction form
   105,886.71/146,123.82 = 58,143.15/x
3. Step 3: Cross multiply
   105,886.71x = 146,123.82 × 58,143.15
4. Step 4: Simplify right side
   105,886.71x = 8,496,099,184.83
5. Step 5: Solve for x
   x = 8,496,099,184.83/105,886.71
6. Step 6: Final answer
   x = 80,237.63