Finding the Fourth Proportional to 395,059.44, 592,650.72 and 128,758.17

Step by Step Solution

1. Step 1: Write the proportion equation
   395,059.44 : 592,650.72 = 128,758.17 : x
2. Step 2: Convert to fraction form
   395,059.44/592,650.72 = 128,758.17/x
3. Step 3: Cross multiply
   395,059.44x = 592,650.72 × 128,758.17
4. Step 4: Simplify right side
   395,059.44x = 76,308,622,156.38
5. Step 5: Solve for x
   x = 76,308,622,156.38/395,059.44
6. Step 6: Final answer
   x = 193,157.32