Finding the Fourth Proportional to 121,078.72, 181,610.70 and 57,943.72

Step by Step Solution

1. Step 1: Write the proportion equation
   121,078.72 : 181,610.70 = 57,943.72 : x
2. Step 2: Convert to fraction form
   121,078.72/181,610.70 = 57,943.72/x
3. Step 3: Cross multiply
   121,078.72x = 181,610.70 × 57,943.72
4. Step 4: Simplify right side
   121,078.72x = 10,523,199,549.80
5. Step 5: Solve for x
   x = 10,523,199,549.80/121,078.72
6. Step 6: Final answer
   x = 86,912.05