Finding the Fourth Proportional to 31,905.72, 43,995.42 and 31,179.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,905.72 : 43,995.42 = 31,179.96 : x
2. Step 2: Convert to fraction form
   31,905.72/43,995.42 = 31,179.96/x
3. Step 3: Cross multiply
   31,905.72x = 43,995.42 × 31,179.96
4. Step 4: Simplify right side
   31,905.72x = 1,371,775,435.78
5. Step 5: Solve for x
   x = 1,371,775,435.78/31,905.72
6. Step 6: Final answer
   x = 42,994.66