Finding the Fourth Proportional to 142,034.72, 213,081.23 and 42,186.02

Step by Step Solution

1. Step 1: Write the proportion equation
   142,034.72 : 213,081.23 = 42,186.02 : x
2. Step 2: Convert to fraction form
   142,034.72/213,081.23 = 42,186.02/x
3. Step 3: Cross multiply
   142,034.72x = 213,081.23 × 42,186.02
4. Step 4: Simplify right side
   142,034.72x = 8,989,048,070.46
5. Step 5: Solve for x
   x = 8,989,048,070.46/142,034.72
6. Step 6: Final answer
   x = 63,287.68