Finding the Fourth Proportional to 105,906.75, 146,184.12 and 68,181

Step by Step Solution

1. Step 1: Write the proportion equation
   105,906.75 : 146,184.12 = 68,181 : x
2. Step 2: Convert to fraction form
   105,906.75/146,184.12 = 68,181/x
3. Step 3: Cross multiply
   105,906.75x = 146,184.12 × 68,181
4. Step 4: Simplify right side
   105,906.75x = 9,966,979,485.72
5. Step 5: Solve for x
   x = 9,966,979,485.72/105,906.75
6. Step 6: Final answer
   x = 94,110.90