Finding the Fourth Proportional to 139,111,501.42, 209,667,170.86 and 119,912,459.05

Step by Step Solution

1. Step 1: Write the proportion equation
   139,111,501.42 : 209,667,170.86 = 119,912,459.05 : x
2. Step 2: Convert to fraction form
   139,111,501.42/209,667,170.86 = 119,912,459.05/x
3. Step 3: Cross multiply
   139,111,501.42x = 209,667,170.86 × 119,912,459.05
4. Step 4: Simplify right side
   139,111,501.42x = 25,141,706,039,879,104
5. Step 5: Solve for x
   x = 25,141,706,039,879,104/139,111,501.42
6. Step 6: Final answer
   x = 180,730,606.62