Finding the Fourth Proportional to 142,116.88, 196,118.94 and 78,453.04

Step by Step Solution

1. Step 1: Write the proportion equation
   142,116.88 : 196,118.94 = 78,453.04 : x
2. Step 2: Convert to fraction form
   142,116.88/196,118.94 = 78,453.04/x
3. Step 3: Cross multiply
   142,116.88x = 196,118.94 × 78,453.04
4. Step 4: Simplify right side
   142,116.88x = 15,386,127,044.58
5. Step 5: Solve for x
   x = 15,386,127,044.58/142,116.88
6. Step 6: Final answer
   x = 108,263.90