Finding the Fourth Proportional to 89,418.09, 123,407.69 and 53,627.79

Step by Step Solution

1. Step 1: Write the proportion equation
   89,418.09 : 123,407.69 = 53,627.79 : x
2. Step 2: Convert to fraction form
   89,418.09/123,407.69 = 53,627.79/x
3. Step 3: Cross multiply
   89,418.09x = 123,407.69 × 53,627.79
4. Step 4: Simplify right side
   89,418.09x = 6,618,081,308.15
5. Step 5: Solve for x
   x = 6,618,081,308.15/89,418.09
6. Step 6: Final answer
   x = 74,012.78