Finding the Fourth Proportional to 64,856.50, 89,502.09 and 35,048.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,856.50 : 89,502.09 = 35,048.50 : x
2. Step 2: Convert to fraction form
   64,856.50/89,502.09 = 35,048.50/x
3. Step 3: Cross multiply
   64,856.50x = 89,502.09 × 35,048.50
4. Step 4: Simplify right side
   64,856.50x = 3,136,914,001.37
5. Step 5: Solve for x
   x = 3,136,914,001.37/64,856.50
6. Step 6: Final answer
   x = 48,366.99