Finding the Fourth Proportional to 139,286.96, 208,667.32 and 107,968.88

Step by Step Solution

1. Step 1: Write the proportion equation
   139,286.96 : 208,667.32 = 107,968.88 : x
2. Step 2: Convert to fraction form
   139,286.96/208,667.32 = 107,968.88/x
3. Step 3: Cross multiply
   139,286.96x = 208,667.32 × 107,968.88
4. Step 4: Simplify right side
   139,286.96x = 22,529,576,833.00
5. Step 5: Solve for x
   x = 22,529,576,833.00/139,286.96
6. Step 6: Final answer
   x = 161,749.36