Finding the Fourth Proportional to 209,911.86, 314,884.71 and 65,807.82

Step by Step Solution

1. Step 1: Write the proportion equation
   209,911.86 : 314,884.71 = 65,807.82 : x
2. Step 2: Convert to fraction form
   209,911.86/314,884.71 = 65,807.82/x
3. Step 3: Cross multiply
   209,911.86x = 314,884.71 × 65,807.82
4. Step 4: Simplify right side
   209,911.86x = 20,721,876,316.43
5. Step 5: Solve for x
   x = 20,721,876,316.43/209,911.86
6. Step 6: Final answer
   x = 98,717.03