Finding the Fourth Proportional to 64,553.60, 89,081.60 and 35,875.05

Step by Step Solution

1. Step 1: Write the proportion equation
   64,553.60 : 89,081.60 = 35,875.05 : x
2. Step 2: Convert to fraction form
   64,553.60/89,081.60 = 35,875.05/x
3. Step 3: Cross multiply
   64,553.60x = 89,081.60 × 35,875.05
4. Step 4: Simplify right side
   64,553.60x = 3,195,806,229.30
5. Step 5: Solve for x
   x = 3,195,806,229.30/64,553.60
6. Step 6: Final answer
   x = 49,506.24