Finding the Fourth Proportional to 114,767.31, 172,160.89 and 31,661.31

Step by Step Solution

1. Step 1: Write the proportion equation
   114,767.31 : 172,160.89 = 31,661.31 : x
2. Step 2: Convert to fraction form
   114,767.31/172,160.89 = 31,661.31/x
3. Step 3: Cross multiply
   114,767.31x = 172,160.89 × 31,661.31
4. Step 4: Simplify right side
   114,767.31x = 5,450,839,817.72
5. Step 5: Solve for x
   x = 5,450,839,817.72/114,767.31
6. Step 6: Final answer
   x = 47,494.71