Finding the Fourth Proportional to 49,824.72, 68,781.15 and 30,707.91

Step by Step Solution

1. Step 1: Write the proportion equation
   49,824.72 : 68,781.15 = 30,707.91 : x
2. Step 2: Convert to fraction form
   49,824.72/68,781.15 = 30,707.91/x
3. Step 3: Cross multiply
   49,824.72x = 68,781.15 × 30,707.91
4. Step 4: Simplify right side
   49,824.72x = 2,112,125,363.90
5. Step 5: Solve for x
   x = 2,112,125,363.90/49,824.72
6. Step 6: Final answer
   x = 42,391.11