Finding the Fourth Proportional to 30,914.76, 42,661.80 and 17,485.56

Step by Step Solution

1. Step 1: Write the proportion equation
   30,914.76 : 42,661.80 = 17,485.56 : x
2. Step 2: Convert to fraction form
   30,914.76/42,661.80 = 17,485.56/x
3. Step 3: Cross multiply
   30,914.76x = 42,661.80 × 17,485.56
4. Step 4: Simplify right side
   30,914.76x = 745,965,463.61
5. Step 5: Solve for x
   x = 745,965,463.61/30,914.76
6. Step 6: Final answer
   x = 24,129.75