Finding the Fourth Proportional to 142,663.47, 213,994.69 and 42,823.23

Step by Step Solution

1. Step 1: Write the proportion equation
   142,663.47 : 213,994.69 = 42,823.23 : x
2. Step 2: Convert to fraction form
   142,663.47/213,994.69 = 42,823.23/x
3. Step 3: Cross multiply
   142,663.47x = 213,994.69 × 42,823.23
4. Step 4: Simplify right side
   142,663.47x = 9,163,943,828.65
5. Step 5: Solve for x
   x = 9,163,943,828.65/142,663.47
6. Step 6: Final answer
   x = 64,234.69