Finding the Fourth Proportional to 345,797, 477,199.86 and 186,821

Step by Step Solution

1. Step 1: Write the proportion equation
   345,797 : 477,199.86 = 186,821 : x
2. Step 2: Convert to fraction form
   345,797/477,199.86 = 186,821/x
3. Step 3: Cross multiply
   345,797x = 477,199.86 × 186,821
4. Step 4: Simplify right side
   345,797x = 89,150,955,045.06
5. Step 5: Solve for x
   x = 89,150,955,045.06/345,797
6. Step 6: Final answer
   x = 257,812.98