Finding the Fourth Proportional to 142,045.34, 212,865 and 104,309.42

Step by Step Solution

1. Step 1: Write the proportion equation
   142,045.34 : 212,865 = 104,309.42 : x
2. Step 2: Convert to fraction form
   142,045.34/212,865 = 104,309.42/x
3. Step 3: Cross multiply
   142,045.34x = 212,865 × 104,309.42
4. Step 4: Simplify right side
   142,045.34x = 22,203,824,688.30
5. Step 5: Solve for x
   x = 22,203,824,688.30/142,045.34
6. Step 6: Final answer
   x = 156,315.05