Finding the Fourth Proportional to 615,322.82, 923,081.82 and 260,339.50

Step by Step Solution

1. Step 1: Write the proportion equation
   615,322.82 : 923,081.82 = 260,339.50 : x
2. Step 2: Convert to fraction form
   615,322.82/923,081.82 = 260,339.50/x
3. Step 3: Cross multiply
   615,322.82x = 923,081.82 × 260,339.50
4. Step 4: Simplify right side
   615,322.82x = 240,314,659,477.89
5. Step 5: Solve for x
   x = 240,314,659,477.89/615,322.82
6. Step 6: Final answer
   x = 390,550.54