Finding the Fourth Proportional to 139,968,134.45, 196,156,942.15 and 139,968,134.45

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,134.45 : 196,156,942.15 = 139,968,134.45 : x
2. Step 2: Convert to fraction form
   139,968,134.45/196,156,942.15 = 139,968,134.45/x
3. Step 3: Cross multiply
   139,968,134.45x = 196,156,942.15 × 139,968,134.45
4. Step 4: Simplify right side
   139,968,134.45x = 27,455,721,252,152,072
5. Step 5: Solve for x
   x = 27,455,721,252,152,072/139,968,134.45
6. Step 6: Final answer
   x = 196,156,942.15