Finding the Fourth Proportional to 142,164.05, 213,174.78 and 47,360.91

Step by Step Solution

1. Step 1: Write the proportion equation
   142,164.05 : 213,174.78 = 47,360.91 : x
2. Step 2: Convert to fraction form
   142,164.05/213,174.78 = 47,360.91/x
3. Step 3: Cross multiply
   142,164.05x = 213,174.78 × 47,360.91
4. Step 4: Simplify right side
   142,164.05x = 10,096,151,569.85
5. Step 5: Solve for x
   x = 10,096,151,569.85/142,164.05
6. Step 6: Final answer
   x = 71,017.61