Finding the Fourth Proportional to 139,968,105.95, 209,952,159.06 and 139,968,105.95

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,105.95 : 209,952,159.06 = 139,968,105.95 : x
2. Step 2: Convert to fraction form
   139,968,105.95/209,952,159.06 = 139,968,105.95/x
3. Step 3: Cross multiply
   139,968,105.95x = 209,952,159.06 × 139,968,105.95
4. Step 4: Simplify right side
   139,968,105.95x = 29,386,606,043,741,332
5. Step 5: Solve for x
   x = 29,386,606,043,741,332/139,968,105.95
6. Step 6: Final answer
   x = 209,952,159.06