Finding the Fourth Proportional to 78,571.42, 117,875.58 and 25,980.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,571.42 : 117,875.58 = 25,980.88 : x
2. Step 2: Convert to fraction form
   78,571.42/117,875.58 = 25,980.88/x
3. Step 3: Cross multiply
   78,571.42x = 117,875.58 × 25,980.88
4. Step 4: Simplify right side
   78,571.42x = 3,062,511,298.91
5. Step 5: Solve for x
   x = 3,062,511,298.91/78,571.42
6. Step 6: Final answer
   x = 38,977.42