Finding the Fourth Proportional to 338,558.52, 507,868.52 and 89,240.52

Step by Step Solution

1. Step 1: Write the proportion equation
   338,558.52 : 507,868.52 = 89,240.52 : x
2. Step 2: Convert to fraction form
   338,558.52/507,868.52 = 89,240.52/x
3. Step 3: Cross multiply
   338,558.52x = 507,868.52 × 89,240.52
4. Step 4: Simplify right side
   338,558.52x = 45,322,450,816.43
5. Step 5: Solve for x
   x = 45,322,450,816.43/338,558.52
6. Step 6: Final answer
   x = 133,868.88