Finding the Fourth Proportional to 111,196.31, 166,775.70 and 31,215.94

Step by Step Solution

1. Step 1: Write the proportion equation
   111,196.31 : 166,775.70 = 31,215.94 : x
2. Step 2: Convert to fraction form
   111,196.31/166,775.70 = 31,215.94/x
3. Step 3: Cross multiply
   111,196.31x = 166,775.70 × 31,215.94
4. Step 4: Simplify right side
   111,196.31x = 5,206,059,827.72
5. Step 5: Solve for x
   x = 5,206,059,827.72/111,196.31
6. Step 6: Final answer
   x = 46,818.64