Finding the Fourth Proportional to 170,026.49, 254,689.72 and 99,736.31

Step by Step Solution

1. Step 1: Write the proportion equation
   170,026.49 : 254,689.72 = 99,736.31 : x
2. Step 2: Convert to fraction form
   170,026.49/254,689.72 = 99,736.31/x
3. Step 3: Cross multiply
   170,026.49x = 254,689.72 × 99,736.31
4. Step 4: Simplify right side
   170,026.49x = 25,401,813,255.12
5. Step 5: Solve for x
   x = 25,401,813,255.12/170,026.49
6. Step 6: Final answer
   x = 149,399.15