Finding the Fourth Proportional to 426,667.60, 588,799.48 and 235,680.98

Step by Step Solution

1. Step 1: Write the proportion equation
   426,667.60 : 588,799.48 = 235,680.98 : x
2. Step 2: Convert to fraction form
   426,667.60/588,799.48 = 235,680.98/x
3. Step 3: Cross multiply
   426,667.60x = 588,799.48 × 235,680.98
4. Step 4: Simplify right side
   426,667.60x = 138,768,838,469.89
5. Step 5: Solve for x
   x = 138,768,838,469.89/426,667.60
6. Step 6: Final answer
   x = 325,238.75