Finding the Fourth Proportional to 131,209.06, 196,819.78 and 42,469.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,209.06 : 196,819.78 = 42,469.50 : x
2. Step 2: Convert to fraction form
   131,209.06/196,819.78 = 42,469.50/x
3. Step 3: Cross multiply
   131,209.06x = 196,819.78 × 42,469.50
4. Step 4: Simplify right side
   131,209.06x = 8,358,837,646.71
5. Step 5: Solve for x
   x = 8,358,837,646.71/131,209.06
6. Step 6: Final answer
   x = 63,706.25