Finding the Fourth Proportional to 49,849.89, 74,599.18 and 31,138.74

Step by Step Solution

1. Step 1: Write the proportion equation
   49,849.89 : 74,599.18 = 31,138.74 : x
2. Step 2: Convert to fraction form
   49,849.89/74,599.18 = 31,138.74/x
3. Step 3: Cross multiply
   49,849.89x = 74,599.18 × 31,138.74
4. Step 4: Simplify right side
   49,849.89x = 2,322,924,392.39
5. Step 5: Solve for x
   x = 2,322,924,392.39/49,849.89
6. Step 6: Final answer
   x = 46,598.39