Finding the Fourth Proportional to 30,904.96, 42,647.06 and 18,156.16

Step by Step Solution

1. Step 1: Write the proportion equation
   30,904.96 : 42,647.06 = 18,156.16 : x
2. Step 2: Convert to fraction form
   30,904.96/42,647.06 = 18,156.16/x
3. Step 3: Cross multiply
   30,904.96x = 42,647.06 × 18,156.16
4. Step 4: Simplify right side
   30,904.96x = 774,306,844.89
5. Step 5: Solve for x
   x = 774,306,844.89/30,904.96
6. Step 6: Final answer
   x = 25,054.45