Finding the Fourth Proportional to 64,978.12, 89,669.94 and 35,170.12

Step by Step Solution

1. Step 1: Write the proportion equation
   64,978.12 : 89,669.94 = 35,170.12 : x
2. Step 2: Convert to fraction form
   64,978.12/89,669.94 = 35,170.12/x
3. Step 3: Cross multiply
   64,978.12x = 89,669.94 × 35,170.12
4. Step 4: Simplify right side
   64,978.12x = 3,153,702,550.19
5. Step 5: Solve for x
   x = 3,153,702,550.19/64,978.12
6. Step 6: Final answer
   x = 48,534.84