Finding the Fourth Proportional to 142,379.06, 196,475.25 and 78,713.06

Step by Step Solution

1. Step 1: Write the proportion equation
   142,379.06 : 196,475.25 = 78,713.06 : x
2. Step 2: Convert to fraction form
   142,379.06/196,475.25 = 78,713.06/x
3. Step 3: Cross multiply
   142,379.06x = 196,475.25 × 78,713.06
4. Step 4: Simplify right side
   142,379.06x = 15,465,168,141.77
5. Step 5: Solve for x
   x = 15,465,168,141.77/142,379.06
6. Step 6: Final answer
   x = 108,619.68