Finding the Fourth Proportional to 89,839.10, 123,884.16 and 62,646.80

Step by Step Solution

1. Step 1: Write the proportion equation
   89,839.10 : 123,884.16 = 62,646.80 : x
2. Step 2: Convert to fraction form
   89,839.10/123,884.16 = 62,646.80/x
3. Step 3: Cross multiply
   89,839.10x = 123,884.16 × 62,646.80
4. Step 4: Simplify right side
   89,839.10x = 7,760,946,194.69
5. Step 5: Solve for x
   x = 7,760,946,194.69/89,839.10
6. Step 6: Final answer
   x = 86,387.18