Finding the Fourth Proportional to 142,715.25, 196,947.06 and 79,057.17

Step by Step Solution

1. Step 1: Write the proportion equation
   142,715.25 : 196,947.06 = 79,057.17 : x
2. Step 2: Convert to fraction form
   142,715.25/196,947.06 = 79,057.17/x
3. Step 3: Cross multiply
   142,715.25x = 196,947.06 × 79,057.17
4. Step 4: Simplify right side
   142,715.25x = 15,570,077,203.42
5. Step 5: Solve for x
   x = 15,570,077,203.42/142,715.25
6. Step 6: Final answer
   x = 109,098.90