Finding the Fourth Proportional to 139,968,140.55, 195,501,900.45 and 139,968,140.55

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,140.55 : 195,501,900.45 = 139,968,140.55 : x
2. Step 2: Convert to fraction form
   139,968,140.55/195,501,900.45 = 139,968,140.55/x
3. Step 3: Cross multiply
   139,968,140.55x = 195,501,900.45 × 139,968,140.55
4. Step 4: Simplify right side
   139,968,140.55x = 27,364,037,479,977,708
5. Step 5: Solve for x
   x = 27,364,037,479,977,708/139,968,140.55
6. Step 6: Final answer
   x = 195,501,900.45