Finding the Fourth Proportional to 172,970.28, 238,689.72 and 97,513.92

Step by Step Solution

1. Step 1: Write the proportion equation
   172,970.28 : 238,689.72 = 97,513.92 : x
2. Step 2: Convert to fraction form
   172,970.28/238,689.72 = 97,513.92/x
3. Step 3: Cross multiply
   172,970.28x = 238,689.72 × 97,513.92
4. Step 4: Simplify right side
   172,970.28x = 23,275,570,260.90
5. Step 5: Solve for x
   x = 23,275,570,260.90/172,970.28
6. Step 6: Final answer
   x = 134,563.99