Finding the Fourth Proportional to 78,945, 108,992.70 and 50,700.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,945 : 108,992.70 = 50,700.48 : x
2. Step 2: Convert to fraction form
   78,945/108,992.70 = 50,700.48/x
3. Step 3: Cross multiply
   78,945x = 108,992.70 × 50,700.48
4. Step 4: Simplify right side
   78,945x = 5,525,982,206.50
5. Step 5: Solve for x
   x = 5,525,982,206.50/78,945
6. Step 6: Final answer
   x = 69,997.87