Finding the Fourth Proportional to 42,992.16, 64,458 and 16,674.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,992.16 : 64,458 = 16,674.72 : x
2. Step 2: Convert to fraction form
   42,992.16/64,458 = 16,674.72/x
3. Step 3: Cross multiply
   42,992.16x = 64,458 × 16,674.72
4. Step 4: Simplify right side
   42,992.16x = 1,074,819,101.76
5. Step 5: Solve for x
   x = 1,074,819,101.76/42,992.16
6. Step 6: Final answer
   x = 25,000.35