Finding the Fourth Proportional to 139,968,019.10, 209,952,028.65 and 134,299,315.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,019.10 : 209,952,028.65 = 134,299,315.10 : x
2. Step 2: Convert to fraction form
   139,968,019.10/209,952,028.65 = 134,299,315.10/x
3. Step 3: Cross multiply
   139,968,019.10x = 209,952,028.65 × 134,299,315.10
4. Step 4: Simplify right side
   139,968,019.10x = 28,196,413,651,550,576
5. Step 5: Solve for x
   x = 28,196,413,651,550,576/139,968,019.10
6. Step 6: Final answer
   x = 201,448,972.65