Finding the Fourth Proportional to 139,968,136.80, 195,501,895.20 and 139,968,136.80

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,136.80 : 195,501,895.20 = 139,968,136.80 : x
2. Step 2: Convert to fraction form
   139,968,136.80/195,501,895.20 = 139,968,136.80/x
3. Step 3: Cross multiply
   139,968,136.80x = 195,501,895.20 × 139,968,136.80
4. Step 4: Simplify right side
   139,968,136.80x = 27,364,036,012,012,864
5. Step 5: Solve for x
   x = 27,364,036,012,012,864/139,968,136.80
6. Step 6: Final answer
   x = 195,501,895.20