Finding the Fourth Proportional to 527,826.72, 791,728.98 and 128,469.72

Step by Step Solution

1. Step 1: Write the proportion equation
   527,826.72 : 791,728.98 = 128,469.72 : x
2. Step 2: Convert to fraction form
   527,826.72/791,728.98 = 128,469.72/x
3. Step 3: Cross multiply
   527,826.72x = 791,728.98 × 128,469.72
4. Step 4: Simplify right side
   527,826.72x = 101,713,200,376.49
5. Step 5: Solve for x
   x = 101,713,200,376.49/527,826.72
6. Step 6: Final answer
   x = 192,701.88