Finding the Fourth Proportional to 131,471.76, 197,065.52 and 52,499.20

Step by Step Solution

1. Step 1: Write the proportion equation
   131,471.76 : 197,065.52 = 52,499.20 : x
2. Step 2: Convert to fraction form
   131,471.76/197,065.52 = 52,499.20/x
3. Step 3: Cross multiply
   131,471.76x = 197,065.52 × 52,499.20
4. Step 4: Simplify right side
   131,471.76x = 10,345,782,147.58
5. Step 5: Solve for x
   x = 10,345,782,147.58/131,471.76
6. Step 6: Final answer
   x = 78,692.05