Finding the Fourth Proportional to 427,359.77, 641,258.34 and 174,826.88

Step by Step Solution

1. Step 1: Write the proportion equation
   427,359.77 : 641,258.34 = 174,826.88 : x
2. Step 2: Convert to fraction form
   427,359.77/641,258.34 = 174,826.88/x
3. Step 3: Cross multiply
   427,359.77x = 641,258.34 × 174,826.88
4. Step 4: Simplify right side
   427,359.77x = 112,109,191,649.89
5. Step 5: Solve for x
   x = 112,109,191,649.89/427,359.77
6. Step 6: Final answer
   x = 262,329.78