Finding the Fourth Proportional to 111,836.57, 167,729.69 and 31,872.91

Step by Step Solution

1. Step 1: Write the proportion equation
   111,836.57 : 167,729.69 = 31,872.91 : x
2. Step 2: Convert to fraction form
   111,836.57/167,729.69 = 31,872.91/x
3. Step 3: Cross multiply
   111,836.57x = 167,729.69 × 31,872.91
4. Step 4: Simplify right side
   111,836.57x = 5,346,032,401.65
5. Step 5: Solve for x
   x = 5,346,032,401.65/111,836.57
6. Step 6: Final answer
   x = 47,802.18