Finding the Fourth Proportional to 111,392.59, 167,098.71 and 31,431.26

Step by Step Solution

1. Step 1: Write the proportion equation
   111,392.59 : 167,098.71 = 31,431.26 : x
2. Step 2: Convert to fraction form
   111,392.59/167,098.71 = 31,431.26/x
3. Step 3: Cross multiply
   111,392.59x = 167,098.71 × 31,431.26
4. Step 4: Simplify right side
   111,392.59x = 5,252,122,999.67
5. Step 5: Solve for x
   x = 5,252,122,999.67/111,392.59
6. Step 6: Final answer
   x = 47,149.66