Finding the Fourth Proportional to 142,411.77, 196,532.33 and 78,755.49

Step by Step Solution

1. Step 1: Write the proportion equation
   142,411.77 : 196,532.33 = 78,755.49 : x
2. Step 2: Convert to fraction form
   142,411.77/196,532.33 = 78,755.49/x
3. Step 3: Cross multiply
   142,411.77x = 196,532.33 × 78,755.49
4. Step 4: Simplify right side
   142,411.77x = 15,477,999,556.21
5. Step 5: Solve for x
   x = 15,477,999,556.21/142,411.77
6. Step 6: Final answer
   x = 108,684.83