Finding the Fourth Proportional to 31,159.42, 42,994.92 and 18,410.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,159.42 : 42,994.92 = 18,410.83 : x
2. Step 2: Convert to fraction form
   31,159.42/42,994.92 = 18,410.83/x
3. Step 3: Cross multiply
   31,159.42x = 42,994.92 × 18,410.83
4. Step 4: Simplify right side
   31,159.42x = 791,572,124.54
5. Step 5: Solve for x
   x = 791,572,124.54/31,159.42
6. Step 6: Final answer
   x = 25,403.94