Finding the Fourth Proportional to 64,978.52, 89,670.32 and 35,170.52

Step by Step Solution

1. Step 1: Write the proportion equation
   64,978.52 : 89,670.32 = 35,170.52 : x
2. Step 2: Convert to fraction form
   64,978.52/89,670.32 = 35,170.52/x
3. Step 3: Cross multiply
   64,978.52x = 89,670.32 × 35,170.52
4. Step 4: Simplify right side
   64,978.52x = 3,153,751,782.97
5. Step 5: Solve for x
   x = 3,153,751,782.97/64,978.52
6. Step 6: Final answer
   x = 48,535.30