Finding the Fourth Proportional to 142,157.94, 196,179.24 and 78,500.58

Step by Step Solution

1. Step 1: Write the proportion equation
   142,157.94 : 196,179.24 = 78,500.58 : x
2. Step 2: Convert to fraction form
   142,157.94/196,179.24 = 78,500.58/x
3. Step 3: Cross multiply
   142,157.94x = 196,179.24 × 78,500.58
4. Step 4: Simplify right side
   142,157.94x = 15,400,184,123.96
5. Step 5: Solve for x
   x = 15,400,184,123.96/142,157.94
6. Step 6: Final answer
   x = 108,331.51