Finding the Fourth Proportional to 31,094.31, 42,911.15 and 17,665.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,094.31 : 42,911.15 = 17,665.32 : x
2. Step 2: Convert to fraction form
   31,094.31/42,911.15 = 17,665.32/x
3. Step 3: Cross multiply
   31,094.31x = 42,911.15 × 17,665.32
4. Step 4: Simplify right side
   31,094.31x = 758,039,196.32
5. Step 5: Solve for x
   x = 758,039,196.32/31,094.31
6. Step 6: Final answer
   x = 24,378.71