Finding the Fourth Proportional to 31,374.42, 43,296.52 and 17,945.90

Step by Step Solution

1. Step 1: Write the proportion equation
   31,374.42 : 43,296.52 = 17,945.90 : x
2. Step 2: Convert to fraction form
   31,374.42/43,296.52 = 17,945.90/x
3. Step 3: Cross multiply
   31,374.42x = 43,296.52 × 17,945.90
4. Step 4: Simplify right side
   31,374.42x = 776,995,018.27
5. Step 5: Solve for x
   x = 776,995,018.27/31,374.42
6. Step 6: Final answer
   x = 24,765.24