Finding the Fourth Proportional to 142,055.31, 196,110.03 and 103,771.88

Step by Step Solution

1. Step 1: Write the proportion equation
   142,055.31 : 196,110.03 = 103,771.88 : x
2. Step 2: Convert to fraction form
   142,055.31/196,110.03 = 103,771.88/x
3. Step 3: Cross multiply
   142,055.31x = 196,110.03 × 103,771.88
4. Step 4: Simplify right side
   142,055.31x = 20,350,705,000.55
5. Step 5: Solve for x
   x = 20,350,705,000.55/142,055.31
6. Step 6: Final answer
   x = 143,259.02