Finding the Fourth Proportional to 139,968,147.20, 196,156,960 and 139,968,147.20

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,147.20 : 196,156,960 = 139,968,147.20 : x
2. Step 2: Convert to fraction form
   139,968,147.20/196,156,960 = 139,968,147.20/x
3. Step 3: Cross multiply
   139,968,147.20x = 196,156,960 × 139,968,147.20
4. Step 4: Simplify right side
   139,968,147.20x = 27,455,726,251,584,508
5. Step 5: Solve for x
   x = 27,455,726,251,584,508/139,968,147.20
6. Step 6: Final answer
   x = 196,156,960