Finding the Fourth Proportional to 105,890.58, 146,131.38 and 58,144.14

Step by Step Solution

1. Step 1: Write the proportion equation
   105,890.58 : 146,131.38 = 58,144.14 : x
2. Step 2: Convert to fraction form
   105,890.58/146,131.38 = 58,144.14/x
3. Step 3: Cross multiply
   105,890.58x = 146,131.38 × 58,144.14
4. Step 4: Simplify right side
   105,890.58x = 8,496,683,417.11
5. Step 5: Solve for x
   x = 8,496,683,417.11/105,890.58
6. Step 6: Final answer
   x = 80,240.22