Finding the Fourth Proportional to 142,328.71, 213,530.04 and 42,488.92

Step by Step Solution

1. Step 1: Write the proportion equation
   142,328.71 : 213,530.04 = 42,488.92 : x
2. Step 2: Convert to fraction form
   142,328.71/213,530.04 = 42,488.92/x
3. Step 3: Cross multiply
   142,328.71x = 213,530.04 × 42,488.92
4. Step 4: Simplify right side
   142,328.71x = 9,072,660,787.16
5. Step 5: Solve for x
   x = 9,072,660,787.16/142,328.71
6. Step 6: Final answer
   x = 63,744.42