Finding the Fourth Proportional to 142,581.41, 196,741.76 and 78,919.06

Step by Step Solution

1. Step 1: Write the proportion equation
   142,581.41 : 196,741.76 = 78,919.06 : x
2. Step 2: Convert to fraction form
   142,581.41/196,741.76 = 78,919.06/x
3. Step 3: Cross multiply
   142,581.41x = 196,741.76 × 78,919.06
4. Step 4: Simplify right side
   142,581.41x = 15,526,673,875.50
5. Step 5: Solve for x
   x = 15,526,673,875.50/142,581.41
6. Step 6: Final answer
   x = 108,896.90