Finding the Fourth Proportional to 539,196.96, 808,139.52 and 381,470.88

Step by Step Solution

1. Step 1: Write the proportion equation
   539,196.96 : 808,139.52 = 381,470.88 : x
2. Step 2: Convert to fraction form
   539,196.96/808,139.52 = 381,470.88/x
3. Step 3: Cross multiply
   539,196.96x = 808,139.52 × 381,470.88
4. Step 4: Simplify right side
   539,196.96x = 308,281,693,857.18
5. Step 5: Solve for x
   x = 308,281,693,857.18/539,196.96
6. Step 6: Final answer
   x = 571,742.27