Finding the Fourth Proportional to 345,655, 477,003.90 and 186,679

Step by Step Solution

1. Step 1: Write the proportion equation
   345,655 : 477,003.90 = 186,679 : x
2. Step 2: Convert to fraction form
   345,655/477,003.90 = 186,679/x
3. Step 3: Cross multiply
   345,655x = 477,003.90 × 186,679
4. Step 4: Simplify right side
   345,655x = 89,046,611,048.10
5. Step 5: Solve for x
   x = 89,046,611,048.10/345,655
6. Step 6: Final answer
   x = 257,617.02