Finding the Fourth Proportional to 142,949, 197,264.56 and 79,292.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,949 : 197,264.56 = 79,292.72 : x
2. Step 2: Convert to fraction form
   142,949/197,264.56 = 79,292.72/x
3. Step 3: Cross multiply
   142,949x = 197,264.56 × 79,292.72
4. Step 4: Simplify right side
   142,949x = 15,641,643,522.00
5. Step 5: Solve for x
   x = 15,641,643,522.00/142,949
6. Step 6: Final answer
   x = 109,421.15