Finding the Fourth Proportional to 90,826.49, 136,240.50 and 31,662.05

Step by Step Solution

1. Step 1: Write the proportion equation
   90,826.49 : 136,240.50 = 31,662.05 : x
2. Step 2: Convert to fraction form
   90,826.49/136,240.50 = 31,662.05/x
3. Step 3: Cross multiply
   90,826.49x = 136,240.50 × 31,662.05
4. Step 4: Simplify right side
   90,826.49x = 4,313,653,523.03
5. Step 5: Solve for x
   x = 4,313,653,523.03/90,826.49
6. Step 6: Final answer
   x = 47,493.34