Finding the Fourth Proportional to 428,422.82, 591,223.52 and 237,448.50

Step by Step Solution

1. Step 1: Write the proportion equation
   428,422.82 : 591,223.52 = 237,448.50 : x
2. Step 2: Convert to fraction form
   428,422.82/591,223.52 = 237,448.50/x
3. Step 3: Cross multiply
   428,422.82x = 591,223.52 × 237,448.50
4. Step 4: Simplify right side
   428,422.82x = 140,385,137,988.72
5. Step 5: Solve for x
   x = 140,385,137,988.72/428,422.82
6. Step 6: Final answer
   x = 327,678.95