Finding the Fourth Proportional to 31,104.35, 42,927.09 and 18,361.74

Step by Step Solution

1. Step 1: Write the proportion equation
   31,104.35 : 42,927.09 = 18,361.74 : x
2. Step 2: Convert to fraction form
   31,104.35/42,927.09 = 18,361.74/x
3. Step 3: Cross multiply
   31,104.35x = 42,927.09 × 18,361.74
4. Step 4: Simplify right side
   31,104.35x = 788,215,967.83
5. Step 5: Solve for x
   x = 788,215,967.83/31,104.35
6. Step 6: Final answer
   x = 25,341.02