Finding the Fourth Proportional to 49,760.60, 68,681.34 and 30,911.96

Step by Step Solution

1. Step 1: Write the proportion equation
   49,760.60 : 68,681.34 = 30,911.96 : x
2. Step 2: Convert to fraction form
   49,760.60/68,681.34 = 30,911.96/x
3. Step 3: Cross multiply
   49,760.60x = 68,681.34 × 30,911.96
4. Step 4: Simplify right side
   49,760.60x = 2,123,074,834.83
5. Step 5: Solve for x
   x = 2,123,074,834.83/49,760.60
6. Step 6: Final answer
   x = 42,665.78