Finding the Fourth Proportional to 78,707.56, 108,591.78 and 46,866.28

Step by Step Solution

1. Step 1: Write the proportion equation
   78,707.56 : 108,591.78 = 46,866.28 : x
2. Step 2: Convert to fraction form
   78,707.56/108,591.78 = 46,866.28/x
3. Step 3: Cross multiply
   78,707.56x = 108,591.78 × 46,866.28
4. Step 4: Simplify right side
   78,707.56x = 5,089,292,767.18
5. Step 5: Solve for x
   x = 5,089,292,767.18/78,707.56
6. Step 6: Final answer
   x = 64,660.79