Finding the Fourth Proportional to 90,209.24, 135,314.43 and 23,648.78

Step by Step Solution

1. Step 1: Write the proportion equation
   90,209.24 : 135,314.43 = 23,648.78 : x
2. Step 2: Convert to fraction form
   90,209.24/135,314.43 = 23,648.78/x
3. Step 3: Cross multiply
   90,209.24x = 135,314.43 × 23,648.78
4. Step 4: Simplify right side
   90,209.24x = 3,200,020,807.38
5. Step 5: Solve for x
   x = 3,200,020,807.38/90,209.24
6. Step 6: Final answer
   x = 35,473.31