Finding the Fourth Proportional to 139,968,156.70, 196,156,973.30 and 139,968,156.70

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,156.70 : 196,156,973.30 = 139,968,156.70 : x
2. Step 2: Convert to fraction form
   139,968,156.70/196,156,973.30 = 139,968,156.70/x
3. Step 3: Cross multiply
   139,968,156.70x = 196,156,973.30 × 139,968,156.70
4. Step 4: Simplify right side
   139,968,156.70x = 27,455,729,976,652,116
5. Step 5: Solve for x
   x = 27,455,729,976,652,116/139,968,156.70
6. Step 6: Final answer
   x = 196,156,973.30