Finding the Fourth Proportional to 47,085.20, 64,978.02 and 25,864.46

Step by Step Solution

1. Step 1: Write the proportion equation
   47,085.20 : 64,978.02 = 25,864.46 : x
2. Step 2: Convert to fraction form
   47,085.20/64,978.02 = 25,864.46/x
3. Step 3: Cross multiply
   47,085.20x = 64,978.02 × 25,864.46
4. Step 4: Simplify right side
   47,085.20x = 1,680,621,756.19
5. Step 5: Solve for x
   x = 1,680,621,756.19/47,085.20
6. Step 6: Final answer
   x = 35,693.21