Finding the Fourth Proportional to 395,061.44, 592,653.72 and 128,760.18

Step by Step Solution

1. Step 1: Write the proportion equation
   395,061.44 : 592,653.72 = 128,760.18 : x
2. Step 2: Convert to fraction form
   395,061.44/592,653.72 = 128,760.18/x
3. Step 3: Cross multiply
   395,061.44x = 592,653.72 × 128,760.18
4. Step 4: Simplify right side
   395,061.44x = 76,310,199,664.87
5. Step 5: Solve for x
   x = 76,310,199,664.87/395,061.44
6. Step 6: Final answer
   x = 193,160.33