Finding the Fourth Proportional to 142,065.06, 196,048.86 and 78,402.84

Step by Step Solution

1. Step 1: Write the proportion equation
   142,065.06 : 196,048.86 = 78,402.84 : x
2. Step 2: Convert to fraction form
   142,065.06/196,048.86 = 78,402.84/x
3. Step 3: Cross multiply
   142,065.06x = 196,048.86 × 78,402.84
4. Step 4: Simplify right side
   142,065.06x = 15,370,787,402.76
5. Step 5: Solve for x
   x = 15,370,787,402.76/142,065.06
6. Step 6: Final answer
   x = 108,195.41