Finding the Fourth Proportional to 142,821.98, 214,233.74 and 42,981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,821.98 : 214,233.74 = 42,981.50 : x
2. Step 2: Convert to fraction form
   142,821.98/214,233.74 = 42,981.50/x
3. Step 3: Cross multiply
   142,821.98x = 214,233.74 × 42,981.50
4. Step 4: Simplify right side
   142,821.98x = 9,208,086,209.73
5. Step 5: Solve for x
   x = 9,208,086,209.73/142,821.98
6. Step 6: Final answer
   x = 64,472.47