Finding the Fourth Proportional to 238,404.38, 357,497.31 and 142,385.54

Step by Step Solution

1. Step 1: Write the proportion equation
   238,404.38 : 357,497.31 = 142,385.54 : x
2. Step 2: Convert to fraction form
   238,404.38/357,497.31 = 142,385.54/x
3. Step 3: Cross multiply
   238,404.38x = 357,497.31 × 142,385.54
4. Step 4: Simplify right side
   238,404.38x = 50,902,447,532.90
5. Step 5: Solve for x
   x = 50,902,447,532.90/238,404.38
6. Step 6: Final answer
   x = 213,513.06