Finding the Fourth Proportional to 76,212.02, 105,149.81 and 49,311.92

Step by Step Solution

1. Step 1: Write the proportion equation
   76,212.02 : 105,149.81 = 49,311.92 : x
2. Step 2: Convert to fraction form
   76,212.02/105,149.81 = 49,311.92/x
3. Step 3: Cross multiply
   76,212.02x = 105,149.81 × 49,311.92
4. Step 4: Simplify right side
   76,212.02x = 5,185,139,404.89
5. Step 5: Solve for x
   x = 5,185,139,404.89/76,212.02
6. Step 6: Final answer
   x = 68,035.71