Finding the Fourth Proportional to 142,549.47, 196,710.12 and 78,883.47

Step by Step Solution

1. Step 1: Write the proportion equation
   142,549.47 : 196,710.12 = 78,883.47 : x
2. Step 2: Convert to fraction form
   142,549.47/196,710.12 = 78,883.47/x
3. Step 3: Cross multiply
   142,549.47x = 196,710.12 × 78,883.47
4. Step 4: Simplify right side
   142,549.47x = 15,517,176,849.72
5. Step 5: Solve for x
   x = 15,517,176,849.72/142,549.47
6. Step 6: Final answer
   x = 108,854.68