Finding the Fourth Proportional to 352,801.73, 529,171.38 and 128,164.10

Step by Step Solution

1. Step 1: Write the proportion equation
   352,801.73 : 529,171.38 = 128,164.10 : x
2. Step 2: Convert to fraction form
   352,801.73/529,171.38 = 128,164.10/x
3. Step 3: Cross multiply
   352,801.73x = 529,171.38 × 128,164.10
4. Step 4: Simplify right side
   352,801.73x = 67,820,771,017.60
5. Step 5: Solve for x
   x = 67,820,771,017.60/352,801.73
6. Step 6: Final answer
   x = 192,234.80