Finding the Fourth Proportional to 413,088.05, 570,059.98 and 231,799.57

Step by Step Solution

1. Step 1: Write the proportion equation
   413,088.05 : 570,059.98 = 231,799.57 : x
2. Step 2: Convert to fraction form
   413,088.05/570,059.98 = 231,799.57/x
3. Step 3: Cross multiply
   413,088.05x = 570,059.98 × 231,799.57
4. Step 4: Simplify right side
   413,088.05x = 132,139,659,440.15
5. Step 5: Solve for x
   x = 132,139,659,440.15/413,088.05
6. Step 6: Final answer
   x = 319,882.55