Finding the Fourth Proportional to 105,906.93, 146,115.03 and 67,688.85

Step by Step Solution

1. Step 1: Write the proportion equation
   105,906.93 : 146,115.03 = 67,688.85 : x
2. Step 2: Convert to fraction form
   105,906.93/146,115.03 = 67,688.85/x
3. Step 3: Cross multiply
   105,906.93x = 146,115.03 × 67,688.85
4. Step 4: Simplify right side
   105,906.93x = 9,890,359,150.18
5. Step 5: Solve for x
   x = 9,890,359,150.18/105,906.93
6. Step 6: Final answer
   x = 93,387.27