Finding the Fourth Proportional to 428,054.27, 590,725.26 and 237,081.78

Step by Step Solution

1. Step 1: Write the proportion equation
   428,054.27 : 590,725.26 = 237,081.78 : x
2. Step 2: Convert to fraction form
   428,054.27/590,725.26 = 237,081.78/x
3. Step 3: Cross multiply
   428,054.27x = 590,725.26 × 237,081.78
4. Step 4: Simplify right side
   428,054.27x = 140,050,196,131.76
5. Step 5: Solve for x
   x = 140,050,196,131.76/428,054.27
6. Step 6: Final answer
   x = 327,178.60