Finding the Fourth Proportional to 592,071.77, 817,059.61 and 320,139.59

Step by Step Solution

1. Step 1: Write the proportion equation
   592,071.77 : 817,059.61 = 320,139.59 : x
2. Step 2: Convert to fraction form
   592,071.77/817,059.61 = 320,139.59/x
3. Step 3: Cross multiply
   592,071.77x = 817,059.61 × 320,139.59
4. Step 4: Simplify right side
   592,071.77x = 261,573,128,550.96
5. Step 5: Solve for x
   x = 261,573,128,550.96/592,071.77
6. Step 6: Final answer
   x = 441,792.94