Finding the Fourth Proportional to 142,105.15, 213,111.57 and 47,309.86

Step by Step Solution

1. Step 1: Write the proportion equation
   142,105.15 : 213,111.57 = 47,309.86 : x
2. Step 2: Convert to fraction form
   142,105.15/213,111.57 = 47,309.86/x
3. Step 3: Cross multiply
   142,105.15x = 213,111.57 × 47,309.86
4. Step 4: Simplify right side
   142,105.15x = 10,082,278,541.08
5. Step 5: Solve for x
   x = 10,082,278,541.08/142,105.15
6. Step 6: Final answer
   x = 70,949.42