Finding the Fourth Proportional to 142,406.10, 196,524.27 and 78,746.13

Step by Step Solution

1. Step 1: Write the proportion equation
   142,406.10 : 196,524.27 = 78,746.13 : x
2. Step 2: Convert to fraction form
   142,406.10/196,524.27 = 78,746.13/x
3. Step 3: Cross multiply
   142,406.10x = 196,524.27 × 78,746.13
4. Step 4: Simplify right side
   142,406.10x = 15,475,525,713.58
5. Step 5: Solve for x
   x = 15,475,525,713.58/142,406.10
6. Step 6: Final answer
   x = 108,671.79