Finding the Fourth Proportional to 111,671.60, 167,513.78 and 31,703.31

Step by Step Solution

1. Step 1: Write the proportion equation
   111,671.60 : 167,513.78 = 31,703.31 : x
2. Step 2: Convert to fraction form
   111,671.60/167,513.78 = 31,703.31/x
3. Step 3: Cross multiply
   111,671.60x = 167,513.78 × 31,703.31
4. Step 4: Simplify right side
   111,671.60x = 5,310,741,296.61
5. Step 5: Solve for x
   x = 5,310,741,296.61/111,671.60
6. Step 6: Final answer
   x = 47,556.78