Finding the Fourth Proportional to 142,184.94, 213,255.54 and 47,416.78

Step by Step Solution

1. Step 1: Write the proportion equation
   142,184.94 : 213,255.54 = 47,416.78 : x
2. Step 2: Convert to fraction form
   142,184.94/213,255.54 = 47,416.78/x
3. Step 3: Cross multiply
   142,184.94x = 213,255.54 × 47,416.78
4. Step 4: Simplify right side
   142,184.94x = 10,111,891,023.96
5. Step 5: Solve for x
   x = 10,111,891,023.96/142,184.94
6. Step 6: Final answer
   x = 71,117.88