Finding the Fourth Proportional to 91,158.94, 136,754.46 and 31,173.31

Step by Step Solution

1. Step 1: Write the proportion equation
   91,158.94 : 136,754.46 = 31,173.31 : x
2. Step 2: Convert to fraction form
   91,158.94/136,754.46 = 31,173.31/x
3. Step 3: Cross multiply
   91,158.94x = 136,754.46 × 31,173.31
4. Step 4: Simplify right side
   91,158.94x = 4,263,089,175.46
5. Step 5: Solve for x
   x = 4,263,089,175.46/91,158.94
6. Step 6: Final answer
   x = 46,765.45