Finding the Fourth Proportional to 142,063.05, 196,120.74 and 103,779.63

Step by Step Solution

1. Step 1: Write the proportion equation
   142,063.05 : 196,120.74 = 103,779.63 : x
2. Step 2: Convert to fraction form
   142,063.05/196,120.74 = 103,779.63/x
3. Step 3: Cross multiply
   142,063.05x = 196,120.74 × 103,779.63
4. Step 4: Simplify right side
   142,063.05x = 20,353,337,832.53
5. Step 5: Solve for x
   x = 20,353,337,832.53/142,063.05
6. Step 6: Final answer
   x = 143,269.75