Finding the Fourth Proportional to 447,012.59, 670,518.68 and 131,469.50

Step by Step Solution

1. Step 1: Write the proportion equation
   447,012.59 : 670,518.68 = 131,469.50 : x
2. Step 2: Convert to fraction form
   447,012.59/670,518.68 = 131,469.50/x
3. Step 3: Cross multiply
   447,012.59x = 670,518.68 × 131,469.50
4. Step 4: Simplify right side
   447,012.59x = 88,152,751,590.32
5. Step 5: Solve for x
   x = 88,152,751,590.32/447,012.59
6. Step 6: Final answer
   x = 197,204.18