Finding the Fourth Proportional to 171,060.54, 236,042.55 and 99,456.54

Step by Step Solution

1. Step 1: Write the proportion equation
   171,060.54 : 236,042.55 = 99,456.54 : x
2. Step 2: Convert to fraction form
   171,060.54/236,042.55 = 99,456.54/x
3. Step 3: Cross multiply
   171,060.54x = 236,042.55 × 99,456.54
4. Step 4: Simplify right side
   171,060.54x = 23,475,975,315.78
5. Step 5: Solve for x
   x = 23,475,975,315.78/171,060.54
6. Step 6: Final answer
   x = 137,237.82