Finding the Fourth Proportional to 76,790.52, 105,975.75 and 46,578.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,790.52 : 105,975.75 = 46,578.72 : x
2. Step 2: Convert to fraction form
   76,790.52/105,975.75 = 46,578.72/x
3. Step 3: Cross multiply
   76,790.52x = 105,975.75 × 46,578.72
4. Step 4: Simplify right side
   76,790.52x = 4,936,214,786.04
5. Step 5: Solve for x
   x = 4,936,214,786.04/76,790.52
6. Step 6: Final answer
   x = 64,281.56