Finding the Fourth Proportional to 105,149.34, 145,105.95 and 67,423.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,149.34 : 145,105.95 = 67,423.50 : x
2. Step 2: Convert to fraction form
   105,149.34/145,105.95 = 67,423.50/x
3. Step 3: Cross multiply
   105,149.34x = 145,105.95 × 67,423.50
4. Step 4: Simplify right side
   105,149.34x = 9,783,551,019.83
5. Step 5: Solve for x
   x = 9,783,551,019.83/105,149.34
6. Step 6: Final answer
   x = 93,044.34