Finding the Fourth Proportional to 142,505.80, 196,661.06 and 78,848.04

Step by Step Solution

1. Step 1: Write the proportion equation
   142,505.80 : 196,661.06 = 78,848.04 : x
2. Step 2: Convert to fraction form
   142,505.80/196,661.06 = 78,848.04/x
3. Step 3: Cross multiply
   142,505.80x = 196,661.06 × 78,848.04
4. Step 4: Simplify right side
   142,505.80x = 15,506,339,125.32
5. Step 5: Solve for x
   x = 15,506,339,125.32/142,505.80
6. Step 6: Final answer
   x = 108,811.99