Finding the Fourth Proportional to 139,111,500.42, 209,667,169.35 and 119,912,458.05

Step by Step Solution

1. Step 1: Write the proportion equation
   139,111,500.42 : 209,667,169.35 = 119,912,458.05 : x
2. Step 2: Convert to fraction form
   139,111,500.42/209,667,169.35 = 119,912,458.05/x
3. Step 3: Cross multiply
   139,111,500.42x = 209,667,169.35 × 119,912,458.05
4. Step 4: Simplify right side
   139,111,500.42x = 25,141,705,649,144,120
5. Step 5: Solve for x
   x = 25,141,705,649,144,120/139,111,500.42
6. Step 6: Final answer
   x = 180,730,605.11