Finding the Fourth Proportional to 30,825.48, 42,538.86 and 16,678.02

Step by Step Solution

1. Step 1: Write the proportion equation
   30,825.48 : 42,538.86 = 16,678.02 : x
2. Step 2: Convert to fraction form
   30,825.48/42,538.86 = 16,678.02/x
3. Step 3: Cross multiply
   30,825.48x = 42,538.86 × 16,678.02
4. Step 4: Simplify right side
   30,825.48x = 709,463,957.86
5. Step 5: Solve for x
   x = 709,463,957.86/30,825.48
6. Step 6: Final answer
   x = 23,015.50