Finding the Fourth Proportional to 64,895.50, 89,555.88 and 35,087.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,895.50 : 89,555.88 = 35,087.50 : x
2. Step 2: Convert to fraction form
   64,895.50/89,555.88 = 35,087.50/x
3. Step 3: Cross multiply
   64,895.50x = 89,555.88 × 35,087.50
4. Step 4: Simplify right side
   64,895.50x = 3,142,291,939.50
5. Step 5: Solve for x
   x = 3,142,291,939.50/64,895.50
6. Step 6: Final answer
   x = 48,420.80