Finding the Fourth Proportional to 30,734.56, 42,424.32 and 18,158.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,734.56 : 42,424.32 = 18,158.50 : x
2. Step 2: Convert to fraction form
   30,734.56/42,424.32 = 18,158.50/x
3. Step 3: Cross multiply
   30,734.56x = 42,424.32 × 18,158.50
4. Step 4: Simplify right side
   30,734.56x = 770,362,014.72
5. Step 5: Solve for x
   x = 770,362,014.72/30,734.56
6. Step 6: Final answer
   x = 25,065.01