Finding the Fourth Proportional to 105,189.48, 145,155.56 and 59,878.49

Step by Step Solution

1. Step 1: Write the proportion equation
   105,189.48 : 145,155.56 = 59,878.49 : x
2. Step 2: Convert to fraction form
   105,189.48/145,155.56 = 59,878.49/x
3. Step 3: Cross multiply
   105,189.48x = 145,155.56 × 59,878.49
4. Step 4: Simplify right side
   105,189.48x = 8,691,694,722.73
5. Step 5: Solve for x
   x = 8,691,694,722.73/105,189.48
6. Step 6: Final answer
   x = 82,628.94