Finding the Fourth Proportional to 142,128.76, 213,190.21 and 47,365.82

Step by Step Solution

1. Step 1: Write the proportion equation
   142,128.76 : 213,190.21 = 47,365.82 : x
2. Step 2: Convert to fraction form
   142,128.76/213,190.21 = 47,365.82/x
3. Step 3: Cross multiply
   142,128.76x = 213,190.21 × 47,365.82
4. Step 4: Simplify right side
   142,128.76x = 10,097,928,875.79
5. Step 5: Solve for x
   x = 10,097,928,875.79/142,128.76
6. Step 6: Final answer
   x = 71,047.75