Finding the Fourth Proportional to 78,849.56, 108,812.50 and 50,555.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,849.56 : 108,812.50 = 50,555.25 : x
2. Step 2: Convert to fraction form
   78,849.56/108,812.50 = 50,555.25/x
3. Step 3: Cross multiply
   78,849.56x = 108,812.50 × 50,555.25
4. Step 4: Simplify right side
   78,849.56x = 5,501,043,014.24
5. Step 5: Solve for x
   x = 5,501,043,014.24/78,849.56
6. Step 6: Final answer
   x = 69,766.31