Finding the Fourth Proportional to 89,647.49, 123,672.02 and 57,826.64

Step by Step Solution

1. Step 1: Write the proportion equation
   89,647.49 : 123,672.02 = 57,826.64 : x
2. Step 2: Convert to fraction form
   89,647.49/123,672.02 = 57,826.64/x
3. Step 3: Cross multiply
   89,647.49x = 123,672.02 × 57,826.64
4. Step 4: Simplify right side
   89,647.49x = 7,151,537,398.66
5. Step 5: Solve for x
   x = 7,151,537,398.66/89,647.49
6. Step 6: Final answer
   x = 79,773.98