Finding the Fourth Proportional to 142,727.27, 196,961.96 and 77,314.86

Step by Step Solution

1. Step 1: Write the proportion equation
   142,727.27 : 196,961.96 = 77,314.86 : x
2. Step 2: Convert to fraction form
   142,727.27/196,961.96 = 77,314.86/x
3. Step 3: Cross multiply
   142,727.27x = 196,961.96 × 77,314.86
4. Step 4: Simplify right side
   142,727.27x = 15,228,085,976.15
5. Step 5: Solve for x
   x = 15,228,085,976.15/142,727.27
6. Step 6: Final answer
   x = 106,693.60