Finding the Fourth Proportional to 49,456.72, 74,119.47 and 42,851.98

Step by Step Solution

1. Step 1: Write the proportion equation
   49,456.72 : 74,119.47 = 42,851.98 : x
2. Step 2: Convert to fraction form
   49,456.72/74,119.47 = 42,851.98/x
3. Step 3: Cross multiply
   49,456.72x = 74,119.47 × 42,851.98
4. Step 4: Simplify right side
   49,456.72x = 3,176,166,046.05
5. Step 5: Solve for x
   x = 3,176,166,046.05/49,456.72
6. Step 6: Final answer
   x = 64,221.12