Finding the Fourth Proportional to 76,616.78, 105,698.67 and 46,791.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,616.78 : 105,698.67 = 46,791.50 : x
2. Step 2: Convert to fraction form
   76,616.78/105,698.67 = 46,791.50/x
3. Step 3: Cross multiply
   76,616.78x = 105,698.67 × 46,791.50
4. Step 4: Simplify right side
   76,616.78x = 4,945,799,317.31
5. Step 5: Solve for x
   x = 4,945,799,317.31/76,616.78
6. Step 6: Final answer
   x = 64,552.43