Finding the Fourth Proportional to 69,680.86, 104,562.84 and 25,311.10

Step by Step Solution

1. Step 1: Write the proportion equation
   69,680.86 : 104,562.84 = 25,311.10 : x
2. Step 2: Convert to fraction form
   69,680.86/104,562.84 = 25,311.10/x
3. Step 3: Cross multiply
   69,680.86x = 104,562.84 × 25,311.10
4. Step 4: Simplify right side
   69,680.86x = 2,646,600,499.52
5. Step 5: Solve for x
   x = 2,646,600,499.52/69,680.86
6. Step 6: Final answer
   x = 37,981.74