Finding the Fourth Proportional to 105,498.72, 145,584.60 and 60,191.37

Step by Step Solution

1. Step 1: Write the proportion equation
   105,498.72 : 145,584.60 = 60,191.37 : x
2. Step 2: Convert to fraction form
   105,498.72/145,584.60 = 60,191.37/x
3. Step 3: Cross multiply
   105,498.72x = 145,584.60 × 60,191.37
4. Step 4: Simplify right side
   105,498.72x = 8,762,936,524.90
5. Step 5: Solve for x
   x = 8,762,936,524.90/105,498.72
6. Step 6: Final answer
   x = 83,062.02