Finding the Fourth Proportional to 64,984.50, 89,678.88 and 35,176.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,984.50 : 89,678.88 = 35,176.50 : x
2. Step 2: Convert to fraction form
   64,984.50/89,678.88 = 35,176.50/x
3. Step 3: Cross multiply
   64,984.50x = 89,678.88 × 35,176.50
4. Step 4: Simplify right side
   64,984.50x = 3,154,589,122.32
5. Step 5: Solve for x
   x = 3,154,589,122.32/64,984.50
6. Step 6: Final answer
   x = 48,543.72