Finding the Fourth Proportional to 559,196.76, 838,796.62 and 259,639.32

Step by Step Solution

1. Step 1: Write the proportion equation
   559,196.76 : 838,796.62 = 259,639.32 : x
2. Step 2: Convert to fraction form
   559,196.76/838,796.62 = 259,639.32/x
3. Step 3: Cross multiply
   559,196.76x = 838,796.62 × 259,639.32
4. Step 4: Simplify right side
   559,196.76x = 217,784,584,035.10
5. Step 5: Solve for x
   x = 217,784,584,035.10/559,196.76
6. Step 6: Final answer
   x = 389,459.67