Finding the Fourth Proportional to 142,329.56, 213,487.04 and 42,490.58

Step by Step Solution

1. Step 1: Write the proportion equation
   142,329.56 : 213,487.04 = 42,490.58 : x
2. Step 2: Convert to fraction form
   142,329.56/213,487.04 = 42,490.58/x
3. Step 3: Cross multiply
   142,329.56x = 213,487.04 × 42,490.58
4. Step 4: Simplify right side
   142,329.56x = 9,071,188,152.08
5. Step 5: Solve for x
   x = 9,071,188,152.08/142,329.56
6. Step 6: Final answer
   x = 63,733.69