Finding the Fourth Proportional to 111,339.47, 166,976.55 and 31,372.12

Step by Step Solution

1. Step 1: Write the proportion equation
   111,339.47 : 166,976.55 = 31,372.12 : x
2. Step 2: Convert to fraction form
   111,339.47/166,976.55 = 31,372.12/x
3. Step 3: Cross multiply
   111,339.47x = 166,976.55 × 31,372.12
4. Step 4: Simplify right side
   111,339.47x = 5,238,408,572.51
5. Step 5: Solve for x
   x = 5,238,408,572.51/111,339.47
6. Step 6: Final answer
   x = 47,048.98