Finding the Fourth Proportional to 105,604.98, 145,738.89 and 60,290.34

Step by Step Solution

1. Step 1: Write the proportion equation
   105,604.98 : 145,738.89 = 60,290.34 : x
2. Step 2: Convert to fraction form
   105,604.98/145,738.89 = 60,290.34/x
3. Step 3: Cross multiply
   105,604.98x = 145,738.89 × 60,290.34
4. Step 4: Simplify right side
   105,604.98x = 8,786,647,229.32
5. Step 5: Solve for x
   x = 8,786,647,229.32/105,604.98
6. Step 6: Final answer
   x = 83,202.96