Finding the Fourth Proportional to 139,968,109.30, 209,952,163.95 and 105,955,885.30

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,109.30 : 209,952,163.95 = 105,955,885.30 : x
2. Step 2: Convert to fraction form
   139,968,109.30/209,952,163.95 = 105,955,885.30/x
3. Step 3: Cross multiply
   139,968,109.30x = 209,952,163.95 × 105,955,885.30
4. Step 4: Simplify right side
   139,968,109.30x = 22,245,667,401,972,992
5. Step 5: Solve for x
   x = 22,245,667,401,972,992/139,968,109.30
6. Step 6: Final answer
   x = 158,933,827.95