Finding the Fourth Proportional to 78,804.92, 108,750.78 and 50,510.64

Step by Step Solution

1. Step 1: Write the proportion equation
   78,804.92 : 108,750.78 = 50,510.64 : x
2. Step 2: Convert to fraction form
   78,804.92/108,750.78 = 50,510.64/x
3. Step 3: Cross multiply
   78,804.92x = 108,750.78 × 50,510.64
4. Step 4: Simplify right side
   78,804.92x = 5,493,071,498.30
5. Step 5: Solve for x
   x = 5,493,071,498.30/78,804.92
6. Step 6: Final answer
   x = 69,704.68