Finding the Fourth Proportional to 250,435.82, 375,688.87 and 81,969.39

Step by Step Solution

1. Step 1: Write the proportion equation
   250,435.82 : 375,688.87 = 81,969.39 : x
2. Step 2: Convert to fraction form
   250,435.82/375,688.87 = 81,969.39/x
3. Step 3: Cross multiply
   250,435.82x = 375,688.87 × 81,969.39
4. Step 4: Simplify right side
   250,435.82x = 30,794,987,298.77
5. Step 5: Solve for x
   x = 30,794,987,298.77/250,435.82
6. Step 6: Final answer
   x = 122,965.58