Finding the Fourth Proportional to 142,160.16, 212,152.22 and 126,997

Step by Step Solution

1. Step 1: Write the proportion equation
   142,160.16 : 212,152.22 = 126,997 : x
2. Step 2: Convert to fraction form
   142,160.16/212,152.22 = 126,997/x
3. Step 3: Cross multiply
   142,160.16x = 212,152.22 × 126,997
4. Step 4: Simplify right side
   142,160.16x = 26,942,695,483.34
5. Step 5: Solve for x
   x = 26,942,695,483.34/142,160.16
6. Step 6: Final answer
   x = 189,523.53