Finding the Fourth Proportional to 90,774.72, 136,165.73 and 31,616.37

Step by Step Solution

1. Step 1: Write the proportion equation
   90,774.72 : 136,165.73 = 31,616.37 : x
2. Step 2: Convert to fraction form
   90,774.72/136,165.73 = 31,616.37/x
3. Step 3: Cross multiply
   90,774.72x = 136,165.73 × 31,616.37
4. Step 4: Simplify right side
   90,774.72x = 4,305,065,942.92
5. Step 5: Solve for x
   x = 4,305,065,942.92/90,774.72
6. Step 6: Final answer
   x = 47,425.82