Finding the Fourth Proportional to 353,022.56, 529,367.52 and 128,224.48

Step by Step Solution

1. Step 1: Write the proportion equation
   353,022.56 : 529,367.52 = 128,224.48 : x
2. Step 2: Convert to fraction form
   353,022.56/529,367.52 = 128,224.48/x
3. Step 3: Cross multiply
   353,022.56x = 529,367.52 × 128,224.48
4. Step 4: Simplify right side
   353,022.56x = 67,877,874,980.89
5. Step 5: Solve for x
   x = 67,877,874,980.89/353,022.56
6. Step 6: Final answer
   x = 192,276.31