Finding the Fourth Proportional to 142,123.35, 213,147.90 and 42,256.65

Step by Step Solution

1. Step 1: Write the proportion equation
   142,123.35 : 213,147.90 = 42,256.65 : x
2. Step 2: Convert to fraction form
   142,123.35/213,147.90 = 42,256.65/x
3. Step 3: Cross multiply
   142,123.35x = 213,147.90 × 42,256.65
4. Step 4: Simplify right side
   142,123.35x = 9,006,916,208.54
5. Step 5: Solve for x
   x = 9,006,916,208.54/142,123.35
6. Step 6: Final answer
   x = 63,373.94