Finding the Fourth Proportional to 111,401.18, 167,111.62 and 31,439.86

Step by Step Solution

1. Step 1: Write the proportion equation
   111,401.18 : 167,111.62 = 31,439.86 : x
2. Step 2: Convert to fraction form
   111,401.18/167,111.62 = 31,439.86/x
3. Step 3: Cross multiply
   111,401.18x = 167,111.62 × 31,439.86
4. Step 4: Simplify right side
   111,401.18x = 5,253,965,937.17
5. Step 5: Solve for x
   x = 5,253,965,937.17/111,401.18
6. Step 6: Final answer
   x = 47,162.57