Finding the Fourth Proportional to 425,502.72, 637,860.42 and 238,383

Step by Step Solution

1. Step 1: Write the proportion equation
   425,502.72 : 637,860.42 = 238,383 : x
2. Step 2: Convert to fraction form
   425,502.72/637,860.42 = 238,383/x
3. Step 3: Cross multiply
   425,502.72x = 637,860.42 × 238,383
4. Step 4: Simplify right side
   425,502.72x = 152,055,080,500.86
5. Step 5: Solve for x
   x = 152,055,080,500.86/425,502.72
6. Step 6: Final answer
   x = 357,353.96