Finding the Fourth Proportional to 49,845.67, 68,810.07 and 30,728.86

Step by Step Solution

1. Step 1: Write the proportion equation
   49,845.67 : 68,810.07 = 30,728.86 : x
2. Step 2: Convert to fraction form
   49,845.67/68,810.07 = 30,728.86/x
3. Step 3: Cross multiply
   49,845.67x = 68,810.07 × 30,728.86
4. Step 4: Simplify right side
   49,845.67x = 2,114,455,078.61
5. Step 5: Solve for x
   x = 2,114,455,078.61/49,845.67
6. Step 6: Final answer
   x = 42,420.03