Finding the Fourth Proportional to 437,680.68, 656,258.18 and 171,123.59

Step by Step Solution

1. Step 1: Write the proportion equation
   437,680.68 : 656,258.18 = 171,123.59 : x
2. Step 2: Convert to fraction form
   437,680.68/656,258.18 = 171,123.59/x
3. Step 3: Cross multiply
   437,680.68x = 656,258.18 × 171,123.59
4. Step 4: Simplify right side
   437,680.68x = 112,301,251,591.56
5. Step 5: Solve for x
   x = 112,301,251,591.56/437,680.68
6. Step 6: Final answer
   x = 256,582.61