Finding the Fourth Proportional to 139,968,156.45, 196,156,972.95 and 139,968,156.45

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,156.45 : 196,156,972.95 = 139,968,156.45 : x
2. Step 2: Convert to fraction form
   139,968,156.45/196,156,972.95 = 139,968,156.45/x
3. Step 3: Cross multiply
   139,968,156.45x = 196,156,972.95 × 139,968,156.45
4. Step 4: Simplify right side
   139,968,156.45x = 27,455,729,878,624,016
5. Step 5: Solve for x
   x = 27,455,729,878,624,016/139,968,156.45
6. Step 6: Final answer
   x = 196,156,972.95