Finding the Fourth Proportional to 38,780.79, 57,908.50 and 30,793.68

Step by Step Solution

1. Step 1: Write the proportion equation
   38,780.79 : 57,908.50 = 30,793.68 : x
2. Step 2: Convert to fraction form
   38,780.79/57,908.50 = 30,793.68/x
3. Step 3: Cross multiply
   38,780.79x = 57,908.50 × 30,793.68
4. Step 4: Simplify right side
   38,780.79x = 1,783,215,664.31
5. Step 5: Solve for x
   x = 1,783,215,664.31/38,780.79
6. Step 6: Final answer
   x = 45,981.93