Finding the Fourth Proportional to 90,435.06, 135,601.83 and 40,563.09

Step by Step Solution

1. Step 1: Write the proportion equation
   90,435.06 : 135,601.83 = 40,563.09 : x
2. Step 2: Convert to fraction form
   90,435.06/135,601.83 = 40,563.09/x
3. Step 3: Cross multiply
   90,435.06x = 135,601.83 × 40,563.09
4. Step 4: Simplify right side
   90,435.06x = 5,500,429,234.45
5. Step 5: Solve for x
   x = 5,500,429,234.45/90,435.06
6. Step 6: Final answer
   x = 60,821.87