Finding the Fourth Proportional to 64,574.52, 89,113.68 and 39,080.58

Step by Step Solution

1. Step 1: Write the proportion equation
   64,574.52 : 89,113.68 = 39,080.58 : x
2. Step 2: Convert to fraction form
   64,574.52/89,113.68 = 39,080.58/x
3. Step 3: Cross multiply
   64,574.52x = 89,113.68 × 39,080.58
4. Step 4: Simplify right side
   64,574.52x = 3,482,614,300.33
5. Step 5: Solve for x
   x = 3,482,614,300.33/64,574.52
6. Step 6: Final answer
   x = 53,931.71