Finding the Fourth Proportional to 213,641, 320,465.82 and 65,897

Step by Step Solution

1. Step 1: Write the proportion equation
   213,641 : 320,465.82 = 65,897 : x
2. Step 2: Convert to fraction form
   213,641/320,465.82 = 65,897/x
3. Step 3: Cross multiply
   213,641x = 320,465.82 × 65,897
4. Step 4: Simplify right side
   213,641x = 21,117,736,140.54
5. Step 5: Solve for x
   x = 21,117,736,140.54/213,641
6. Step 6: Final answer
   x = 98,846.83