Finding the Fourth Proportional to 49,468.29, 74,141.49 and 28,138.89

Step by Step Solution

1. Step 1: Write the proportion equation
   49,468.29 : 74,141.49 = 28,138.89 : x
2. Step 2: Convert to fraction form
   49,468.29/74,141.49 = 28,138.89/x
3. Step 3: Cross multiply
   49,468.29x = 74,141.49 × 28,138.89
4. Step 4: Simplify right side
   49,468.29x = 2,086,259,231.55
5. Step 5: Solve for x
   x = 2,086,259,231.55/49,468.29
6. Step 6: Final answer
   x = 42,173.67