Finding the Fourth Proportional to 50,499.20, 70,830.10 and 50,499.20

Step by Step Solution

1. Step 1: Write the proportion equation
   50,499.20 : 70,830.10 = 50,499.20 : x
2. Step 2: Convert to fraction form
   50,499.20/70,830.10 = 50,499.20/x
3. Step 3: Cross multiply
   50,499.20x = 70,830.10 × 50,499.20
4. Step 4: Simplify right side
   50,499.20x = 3,576,863,385.92
5. Step 5: Solve for x
   x = 3,576,863,385.92/50,499.20
6. Step 6: Final answer
   x = 70,830.10