Finding the Fourth Proportional to 89,804.70, 123,931.35 and 49,519.89

Step by Step Solution

1. Step 1: Write the proportion equation
   89,804.70 : 123,931.35 = 49,519.89 : x
2. Step 2: Convert to fraction form
   89,804.70/123,931.35 = 49,519.89/x
3. Step 3: Cross multiply
   89,804.70x = 123,931.35 × 49,519.89
4. Step 4: Simplify right side
   89,804.70x = 6,137,066,819.55
5. Step 5: Solve for x
   x = 6,137,066,819.55/89,804.70
6. Step 6: Final answer
   x = 68,337.92