Finding the Fourth Proportional to 91,160.94, 136,757.46 and 31,175.31

Step by Step Solution

1. Step 1: Write the proportion equation
   91,160.94 : 136,757.46 = 31,175.31 : x
2. Step 2: Convert to fraction form
   91,160.94/136,757.46 = 31,175.31/x
3. Step 3: Cross multiply
   91,160.94x = 136,757.46 × 31,175.31
4. Step 4: Simplify right side
   91,160.94x = 4,263,456,210.31
5. Step 5: Solve for x
   x = 4,263,456,210.31/91,160.94
6. Step 6: Final answer
   x = 46,768.45