Finding the Fourth Proportional to 118,554.82, 163,605.76 and 64,839.68

Step by Step Solution

1. Step 1: Write the proportion equation
   118,554.82 : 163,605.76 = 64,839.68 : x
2. Step 2: Convert to fraction form
   118,554.82/163,605.76 = 64,839.68/x
3. Step 3: Cross multiply
   118,554.82x = 163,605.76 × 64,839.68
4. Step 4: Simplify right side
   118,554.82x = 10,608,145,124.56
5. Step 5: Solve for x
   x = 10,608,145,124.56/118,554.82
6. Step 6: Final answer
   x = 89,478.82