Finding the Fourth Proportional to 238,485.33, 329,037.98 and 142,957.17

Step by Step Solution

1. Step 1: Write the proportion equation
   238,485.33 : 329,037.98 = 142,957.17 : x
2. Step 2: Convert to fraction form
   238,485.33/329,037.98 = 142,957.17/x
3. Step 3: Cross multiply
   238,485.33x = 329,037.98 × 142,957.17
4. Step 4: Simplify right side
   238,485.33x = 47,038,338,443.32
5. Step 5: Solve for x
   x = 47,038,338,443.32/238,485.33
6. Step 6: Final answer
   x = 197,237.87