Finding the Fourth Proportional to 139,968,111.01, 209,952,166.53 and 139,968,111.01

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,111.01 : 209,952,166.53 = 139,968,111.01 : x
2. Step 2: Convert to fraction form
   139,968,111.01/209,952,166.53 = 139,968,111.01/x
3. Step 3: Cross multiply
   139,968,111.01x = 209,952,166.53 × 139,968,111.01
4. Step 4: Simplify right side
   139,968,111.01x = 29,386,608,151,661,044
5. Step 5: Solve for x
   x = 29,386,608,151,661,044/139,968,111.01
6. Step 6: Final answer
   x = 209,952,166.53