Finding the Fourth Proportional to 105,105.08, 145,049.74 and 59,180.54

Step by Step Solution

1. Step 1: Write the proportion equation
   105,105.08 : 145,049.74 = 59,180.54 : x
2. Step 2: Convert to fraction form
   105,105.08/145,049.74 = 59,180.54/x
3. Step 3: Cross multiply
   105,105.08x = 145,049.74 × 59,180.54
4. Step 4: Simplify right side
   105,105.08x = 8,584,121,940.06
5. Step 5: Solve for x
   x = 8,584,121,940.06/105,105.08
6. Step 6: Final answer
   x = 81,671.81