Finding the Fourth Proportional to 345,724.50, 477,099.81 and 186,748.50

Step by Step Solution

1. Step 1: Write the proportion equation
   345,724.50 : 477,099.81 = 186,748.50 : x
2. Step 2: Convert to fraction form
   345,724.50/477,099.81 = 186,748.50/x
3. Step 3: Cross multiply
   345,724.50x = 477,099.81 × 186,748.50
4. Step 4: Simplify right side
   345,724.50x = 89,097,673,867.79
5. Step 5: Solve for x
   x = 89,097,673,867.79/345,724.50
6. Step 6: Final answer
   x = 257,712.93