Finding the Fourth Proportional to 106,451.69, 146,905.46 and 68,791.55

Step by Step Solution

1. Step 1: Write the proportion equation
   106,451.69 : 146,905.46 = 68,791.55 : x
2. Step 2: Convert to fraction form
   106,451.69/146,905.46 = 68,791.55/x
3. Step 3: Cross multiply
   106,451.69x = 146,905.46 × 68,791.55
4. Step 4: Simplify right side
   106,451.69x = 10,105,854,296.86
5. Step 5: Solve for x
   x = 10,105,854,296.86/106,451.69
6. Step 6: Final answer
   x = 94,933.71