Finding the Fourth Proportional to 238,386.96, 329,002.56 and 142,890.48

Step by Step Solution

1. Step 1: Write the proportion equation
   238,386.96 : 329,002.56 = 142,890.48 : x
2. Step 2: Convert to fraction form
   238,386.96/329,002.56 = 142,890.48/x
3. Step 3: Cross multiply
   238,386.96x = 329,002.56 × 142,890.48
4. Step 4: Simplify right side
   238,386.96x = 47,011,333,719.63
5. Step 5: Solve for x
   x = 47,011,333,719.63/238,386.96
6. Step 6: Final answer
   x = 197,205.98