Finding the Fourth Proportional to 73,139.35, 109,705.38 and 25,756.78

Step by Step Solution

1. Step 1: Write the proportion equation
   73,139.35 : 109,705.38 = 25,756.78 : x
2. Step 2: Convert to fraction form
   73,139.35/109,705.38 = 25,756.78/x
3. Step 3: Cross multiply
   73,139.35x = 109,705.38 × 25,756.78
4. Step 4: Simplify right side
   73,139.35x = 2,825,657,337.48
5. Step 5: Solve for x
   x = 2,825,657,337.48/73,139.35
6. Step 6: Final answer
   x = 38,633.89