Finding the Fourth Proportional to 78,585.72, 117,901.55 and 25,276.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,585.72 : 117,901.55 = 25,276.50 : x
2. Step 2: Convert to fraction form
   78,585.72/117,901.55 = 25,276.50/x
3. Step 3: Cross multiply
   78,585.72x = 117,901.55 × 25,276.50
4. Step 4: Simplify right side
   78,585.72x = 2,980,138,528.58
5. Step 5: Solve for x
   x = 2,980,138,528.58/78,585.72
6. Step 6: Final answer
   x = 37,922.14