Finding the Fourth Proportional to 139,968,139.70, 196,156,949.50 and 139,968,139.70

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,139.70 : 196,156,949.50 = 139,968,139.70 : x
2. Step 2: Convert to fraction form
   139,968,139.70/196,156,949.50 = 139,968,139.70/x
3. Step 3: Cross multiply
   139,968,139.70x = 196,156,949.50 × 139,968,139.70
4. Step 4: Simplify right side
   139,968,139.70x = 27,455,723,310,741,844
5. Step 5: Solve for x
   x = 27,455,723,310,741,844/139,968,139.70
6. Step 6: Final answer
   x = 196,156,949.50