Finding the Fourth Proportional to 89,338.62, 123,287.39 and 53,047.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,338.62 : 123,287.39 = 53,047.31 : x
2. Step 2: Convert to fraction form
   89,338.62/123,287.39 = 53,047.31/x
3. Step 3: Cross multiply
   89,338.62x = 123,287.39 × 53,047.31
4. Step 4: Simplify right side
   89,338.62x = 6,540,064,396.42
5. Step 5: Solve for x
   x = 6,540,064,396.42/89,338.62
6. Step 6: Final answer
   x = 73,205.34