Finding the Fourth Proportional to 508,404.01, 762,411.79 and 171,354.10

Step by Step Solution

1. Step 1: Write the proportion equation
   508,404.01 : 762,411.79 = 171,354.10 : x
2. Step 2: Convert to fraction form
   508,404.01/762,411.79 = 171,354.10/x
3. Step 3: Cross multiply
   508,404.01x = 762,411.79 × 171,354.10
4. Step 4: Simplify right side
   508,404.01x = 130,642,386,104.84
5. Step 5: Solve for x
   x = 130,642,386,104.84/508,404.01
6. Step 6: Final answer
   x = 256,965.69