Finding the Fourth Proportional to 64,987.31, 89,682.49 and 35,179.31

Step by Step Solution

1. Step 1: Write the proportion equation
   64,987.31 : 89,682.49 = 35,179.31 : x
2. Step 2: Convert to fraction form
   64,987.31/89,682.49 = 35,179.31/x
3. Step 3: Cross multiply
   64,987.31x = 89,682.49 × 35,179.31
4. Step 4: Simplify right side
   64,987.31x = 3,154,968,385.46
5. Step 5: Solve for x
   x = 3,154,968,385.46/64,987.31
6. Step 6: Final answer
   x = 48,547.45