Finding the Fourth Proportional to 42,835.72, 64,226.16 and 20,604.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,835.72 : 64,226.16 = 20,604.82 : x
2. Step 2: Convert to fraction form
   42,835.72/64,226.16 = 20,604.82/x
3. Step 3: Cross multiply
   42,835.72x = 64,226.16 × 20,604.82
4. Step 4: Simplify right side
   42,835.72x = 1,323,368,466.09
5. Step 5: Solve for x
   x = 1,323,368,466.09/42,835.72
6. Step 6: Final answer
   x = 30,894.04