Finding the Fourth Proportional to 172,670.50, 259,020.42 and 48,011.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,670.50 : 259,020.42 = 48,011.50 : x
2. Step 2: Convert to fraction form
   172,670.50/259,020.42 = 48,011.50/x
3. Step 3: Cross multiply
   172,670.50x = 259,020.42 × 48,011.50
4. Step 4: Simplify right side
   172,670.50x = 12,435,958,894.83
5. Step 5: Solve for x
   x = 12,435,958,894.83/172,670.50
6. Step 6: Final answer
   x = 72,021.33