Finding the Fourth Proportional to 105,453.61, 145,503.47 and 62,446.61

Step by Step Solution

1. Step 1: Write the proportion equation
   105,453.61 : 145,503.47 = 62,446.61 : x
2. Step 2: Convert to fraction form
   105,453.61/145,503.47 = 62,446.61/x
3. Step 3: Cross multiply
   105,453.61x = 145,503.47 × 62,446.61
4. Step 4: Simplify right side
   105,453.61x = 9,086,198,146.15
5. Step 5: Solve for x
   x = 9,086,198,146.15/105,453.61
6. Step 6: Final answer
   x = 86,162.99