Finding the Fourth Proportional to 142,128.93, 213,122.08 and 47,325.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,128.93 : 213,122.08 = 47,325.72 : x
2. Step 2: Convert to fraction form
   142,128.93/213,122.08 = 47,325.72/x
3. Step 3: Cross multiply
   142,128.93x = 213,122.08 × 47,325.72
4. Step 4: Simplify right side
   142,128.93x = 10,086,155,883.90
5. Step 5: Solve for x
   x = 10,086,155,883.90/142,128.93
6. Step 6: Final answer
   x = 70,964.83