Finding the Fourth Proportional to 89,132.96, 123,059.40 and 57,357.08

Step by Step Solution

1. Step 1: Write the proportion equation
   89,132.96 : 123,059.40 = 57,357.08 : x
2. Step 2: Convert to fraction form
   89,132.96/123,059.40 = 57,357.08/x
3. Step 3: Cross multiply
   89,132.96x = 123,059.40 × 57,357.08
4. Step 4: Simplify right side
   89,132.96x = 7,058,327,850.55
5. Step 5: Solve for x
   x = 7,058,327,850.55/89,132.96
6. Step 6: Final answer
   x = 79,188.75