Finding the Fourth Proportional to 105,984.27, 146,258.78 and 58,238.55

Step by Step Solution

1. Step 1: Write the proportion equation
   105,984.27 : 146,258.78 = 58,238.55 : x
2. Step 2: Convert to fraction form
   105,984.27/146,258.78 = 58,238.55/x
3. Step 3: Cross multiply
   105,984.27x = 146,258.78 × 58,238.55
4. Step 4: Simplify right side
   105,984.27x = 8,517,898,980.78
5. Step 5: Solve for x
   x = 8,517,898,980.78/105,984.27
6. Step 6: Final answer
   x = 80,369.46