Finding the Fourth Proportional to 171,928.80, 258,002.55 and 100,851.30

Step by Step Solution

1. Step 1: Write the proportion equation
   171,928.80 : 258,002.55 = 100,851.30 : x
2. Step 2: Convert to fraction form
   171,928.80/258,002.55 = 100,851.30/x
3. Step 3: Cross multiply
   171,928.80x = 258,002.55 × 100,851.30
4. Step 4: Simplify right side
   171,928.80x = 26,019,892,570.82
5. Step 5: Solve for x
   x = 26,019,892,570.82/171,928.80
6. Step 6: Final answer
   x = 151,341.09