Finding the Fourth Proportional to 47,085.74, 64,978.37 and 25,866.38

Step by Step Solution

1. Step 1: Write the proportion equation
   47,085.74 : 64,978.37 = 25,866.38 : x
2. Step 2: Convert to fraction form
   47,085.74/64,978.37 = 25,866.38/x
3. Step 3: Cross multiply
   47,085.74x = 64,978.37 × 25,866.38
4. Step 4: Simplify right side
   47,085.74x = 1,680,754,755.98
5. Step 5: Solve for x
   x = 1,680,754,755.98/47,085.74
6. Step 6: Final answer
   x = 35,695.63