Finding the Fourth Proportional to 76,217.16, 105,248.79 and 49,404.54

Step by Step Solution

1. Step 1: Write the proportion equation
   76,217.16 : 105,248.79 = 49,404.54 : x
2. Step 2: Convert to fraction form
   76,217.16/105,248.79 = 49,404.54/x
3. Step 3: Cross multiply
   76,217.16x = 105,248.79 × 49,404.54
4. Step 4: Simplify right side
   76,217.16x = 5,199,768,055.51
5. Step 5: Solve for x
   x = 5,199,768,055.51/76,217.16
6. Step 6: Final answer
   x = 68,223.06