Finding the Fourth Proportional to 139,968,018.10, 209,574,113.55 and 139,968,018.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,018.10 : 209,574,113.55 = 139,968,018.10 : x
2. Step 2: Convert to fraction form
   139,968,018.10/209,574,113.55 = 139,968,018.10/x
3. Step 3: Cross multiply
   139,968,018.10x = 209,574,113.55 × 139,968,018.10
4. Step 4: Simplify right side
   139,968,018.10x = 29,333,673,318,657,856
5. Step 5: Solve for x
   x = 29,333,673,318,657,856/139,968,018.10
6. Step 6: Final answer
   x = 209,574,113.55