Finding the Fourth Proportional to 142,152.52, 196,165.24 and 78,488.96

Step by Step Solution

1. Step 1: Write the proportion equation
   142,152.52 : 196,165.24 = 78,488.96 : x
2. Step 2: Convert to fraction form
   142,152.52/196,165.24 = 78,488.96/x
3. Step 3: Cross multiply
   142,152.52x = 196,165.24 × 78,488.96
4. Step 4: Simplify right side
   142,152.52x = 15,396,805,675.75
5. Step 5: Solve for x
   x = 15,396,805,675.75/142,152.52
6. Step 6: Final answer
   x = 108,311.87