Finding the Fourth Proportional to 89,133.96, 123,060.78 and 57,358.08

Step by Step Solution

1. Step 1: Write the proportion equation
   89,133.96 : 123,060.78 = 57,358.08 : x
2. Step 2: Convert to fraction form
   89,133.96/123,060.78 = 57,358.08/x
3. Step 3: Cross multiply
   89,133.96x = 123,060.78 × 57,358.08
4. Step 4: Simplify right side
   89,133.96x = 7,058,530,064.10
5. Step 5: Solve for x
   x = 7,058,530,064.10/89,133.96
6. Step 6: Final answer
   x = 79,190.13