Finding the Fourth Proportional to 314,591.58, 433,759.05 and 257,017.59

Step by Step Solution

1. Step 1: Write the proportion equation
   314,591.58 : 433,759.05 = 257,017.59 : x
2. Step 2: Convert to fraction form
   314,591.58/433,759.05 = 257,017.59/x
3. Step 3: Cross multiply
   314,591.58x = 433,759.05 × 257,017.59
4. Step 4: Simplify right side
   314,591.58x = 111,483,705,671.69
5. Step 5: Solve for x
   x = 111,483,705,671.69/314,591.58
6. Step 6: Final answer
   x = 354,376.00