Finding the Fourth Proportional to 208,112.82, 312,212.98 and 67,969.86

Step by Step Solution

1. Step 1: Write the proportion equation
   208,112.82 : 312,212.98 = 67,969.86 : x
2. Step 2: Convert to fraction form
   208,112.82/312,212.98 = 67,969.86/x
3. Step 3: Cross multiply
   208,112.82x = 312,212.98 × 67,969.86
4. Step 4: Simplify right side
   208,112.82x = 21,221,072,540.78
5. Step 5: Solve for x
   x = 21,221,072,540.78/208,112.82
6. Step 6: Final answer
   x = 101,969.08