Finding the Fourth Proportional to 142,477.47, 196,610.76 and 78,811.47

Step by Step Solution

1. Step 1: Write the proportion equation
   142,477.47 : 196,610.76 = 78,811.47 : x
2. Step 2: Convert to fraction form
   142,477.47/196,610.76 = 78,811.47/x
3. Step 3: Cross multiply
   142,477.47x = 196,610.76 × 78,811.47
4. Step 4: Simplify right side
   142,477.47x = 15,495,183,013.42
5. Step 5: Solve for x
   x = 15,495,183,013.42/142,477.47
6. Step 6: Final answer
   x = 108,755.32