Finding the Fourth Proportional to 121,079.72, 181,612.20 and 57,944.72

Step by Step Solution

1. Step 1: Write the proportion equation
   121,079.72 : 181,612.20 = 57,944.72 : x
2. Step 2: Convert to fraction form
   121,079.72/181,612.20 = 57,944.72/x
3. Step 3: Cross multiply
   121,079.72x = 181,612.20 × 57,944.72
4. Step 4: Simplify right side
   121,079.72x = 10,523,468,077.58
5. Step 5: Solve for x
   x = 10,523,468,077.58/121,079.72
6. Step 6: Final answer
   x = 86,913.55