Finding the Fourth Proportional to 142,606.37, 196,799.12 and 78,074.52

Step by Step Solution

1. Step 1: Write the proportion equation
   142,606.37 : 196,799.12 = 78,074.52 : x
2. Step 2: Convert to fraction form
   142,606.37/196,799.12 = 78,074.52/x
3. Step 3: Cross multiply
   142,606.37x = 196,799.12 × 78,074.52
4. Step 4: Simplify right side
   142,606.37x = 15,364,996,440.05
5. Step 5: Solve for x
   x = 15,364,996,440.05/142,606.37
6. Step 6: Final answer
   x = 107,744.11