Finding the Fourth Proportional to 142,371.77, 196,477.17 and 78,713.69

Step by Step Solution

1. Step 1: Write the proportion equation
   142,371.77 : 196,477.17 = 78,713.69 : x
2. Step 2: Convert to fraction form
   142,371.77/196,477.17 = 78,713.69/x
3. Step 3: Cross multiply
   142,371.77x = 196,477.17 × 78,713.69
4. Step 4: Simplify right side
   142,371.77x = 15,465,443,051.46
5. Step 5: Solve for x
   x = 15,465,443,051.46/142,371.77
6. Step 6: Final answer
   x = 108,627.17