Finding the Fourth Proportional to 142,633.42, 213,937.38 and 42,815.92

Step by Step Solution

1. Step 1: Write the proportion equation
   142,633.42 : 213,937.38 = 42,815.92 : x
2. Step 2: Convert to fraction form
   142,633.42/213,937.38 = 42,815.92/x
3. Step 3: Cross multiply
   142,633.42x = 213,937.38 × 42,815.92
4. Step 4: Simplify right side
   142,633.42x = 9,159,925,747.09
5. Step 5: Solve for x
   x = 9,159,925,747.09/142,633.42
6. Step 6: Final answer
   x = 64,220.05