Finding the Fourth Proportional to 105,912.18, 146,158.73 and 58,168.54

Step by Step Solution

1. Step 1: Write the proportion equation
   105,912.18 : 146,158.73 = 58,168.54 : x
2. Step 2: Convert to fraction form
   105,912.18/146,158.73 = 58,168.54/x
3. Step 3: Cross multiply
   105,912.18x = 146,158.73 × 58,168.54
4. Step 4: Simplify right side
   105,912.18x = 8,501,839,932.35
5. Step 5: Solve for x
   x = 8,501,839,932.35/105,912.18
6. Step 6: Final answer
   x = 80,272.54