Finding the Fourth Proportional to 105,889.21, 146,127.27 and 58,145.61

Step by Step Solution

1. Step 1: Write the proportion equation
   105,889.21 : 146,127.27 = 58,145.61 : x
2. Step 2: Convert to fraction form
   105,889.21/146,127.27 = 58,145.61/x
3. Step 3: Cross multiply
   105,889.21x = 146,127.27 × 58,145.61
4. Step 4: Simplify right side
   105,889.21x = 8,496,659,251.78
5. Step 5: Solve for x
   x = 8,496,659,251.78/105,889.21
6. Step 6: Final answer
   x = 80,241.03