Finding the Fourth Proportional to 105,523.29, 145,633.82 and 60,212.43

Step by Step Solution

1. Step 1: Write the proportion equation
   105,523.29 : 145,633.82 = 60,212.43 : x
2. Step 2: Convert to fraction form
   105,523.29/145,633.82 = 60,212.43/x
3. Step 3: Cross multiply
   105,523.29x = 145,633.82 × 60,212.43
4. Step 4: Simplify right side
   105,523.29x = 8,768,965,891.32
5. Step 5: Solve for x
   x = 8,768,965,891.32/105,523.29
6. Step 6: Final answer
   x = 83,099.82