Finding the Fourth Proportional to 142,036.72, 213,084.23 and 42,188.02

Step by Step Solution

1. Step 1: Write the proportion equation
   142,036.72 : 213,084.23 = 42,188.02 : x
2. Step 2: Convert to fraction form
   142,036.72/213,084.23 = 42,188.02/x
3. Step 3: Cross multiply
   142,036.72x = 213,084.23 × 42,188.02
4. Step 4: Simplify right side
   142,036.72x = 8,989,601,756.92
5. Step 5: Solve for x
   x = 8,989,601,756.92/142,036.72
6. Step 6: Final answer
   x = 63,290.69