Finding the Fourth Proportional to 780,002.72, 1,170,180.72 and 247,556

Step by Step Solution

1. Step 1: Write the proportion equation
   780,002.72 : 1,170,180.72 = 247,556 : x
2. Step 2: Convert to fraction form
   780,002.72/1,170,180.72 = 247,556/x
3. Step 3: Cross multiply
   780,002.72x = 1,170,180.72 × 247,556
4. Step 4: Simplify right side
   780,002.72x = 289,685,258,320.32
5. Step 5: Solve for x
   x = 289,685,258,320.32/780,002.72
6. Step 6: Final answer
   x = 371,390.06