Finding the Fourth Proportional to 105,081.75, 145,012.83 and 67,356.09

Step by Step Solution

1. Step 1: Write the proportion equation
   105,081.75 : 145,012.83 = 67,356.09 : x
2. Step 2: Convert to fraction form
   105,081.75/145,012.83 = 67,356.09/x
3. Step 3: Cross multiply
   105,081.75x = 145,012.83 × 67,356.09
4. Step 4: Simplify right side
   105,081.75x = 9,767,497,228.63
5. Step 5: Solve for x
   x = 9,767,497,228.63/105,081.75
6. Step 6: Final answer
   x = 92,951.41