Finding the Fourth Proportional to 89,131.96, 123,058.02 and 57,356.08

Step by Step Solution

1. Step 1: Write the proportion equation
   89,131.96 : 123,058.02 = 57,356.08 : x
2. Step 2: Convert to fraction form
   89,131.96/123,058.02 = 57,356.08/x
3. Step 3: Cross multiply
   89,131.96x = 123,058.02 × 57,356.08
4. Step 4: Simplify right side
   89,131.96x = 7,058,125,639.76
5. Step 5: Solve for x
   x = 7,058,125,639.76/89,131.96
6. Step 6: Final answer
   x = 79,187.37