Finding the Fourth Proportional to 451,667.59, 623,298.35 and 258,134.49

Step by Step Solution

1. Step 1: Write the proportion equation
   451,667.59 : 623,298.35 = 258,134.49 : x
2. Step 2: Convert to fraction form
   451,667.59/623,298.35 = 258,134.49/x
3. Step 3: Cross multiply
   451,667.59x = 623,298.35 × 258,134.49
4. Step 4: Simplify right side
   451,667.59x = 160,894,801,695.09
5. Step 5: Solve for x
   x = 160,894,801,695.09/451,667.59
6. Step 6: Final answer
   x = 356,223.92