Finding the Fourth Proportional to 592,086.72, 888,275.88 and 171,405.12

Step by Step Solution

1. Step 1: Write the proportion equation
   592,086.72 : 888,275.88 = 171,405.12 : x
2. Step 2: Convert to fraction form
   592,086.72/888,275.88 = 171,405.12/x
3. Step 3: Cross multiply
   592,086.72x = 888,275.88 × 171,405.12
4. Step 4: Simplify right side
   592,086.72x = 152,255,033,804.51
5. Step 5: Solve for x
   x = 152,255,033,804.51/592,086.72
6. Step 6: Final answer
   x = 257,149.89