Finding the Fourth Proportional to 642,978.74, 886,904.00 and 413,141.01

Step by Step Solution

1. Step 1: Write the proportion equation
   642,978.74 : 886,904.00 = 413,141.01 : x
2. Step 2: Convert to fraction form
   642,978.74/886,904.00 = 413,141.01/x
3. Step 3: Cross multiply
   642,978.74x = 886,904.00 × 413,141.01
4. Step 4: Simplify right side
   642,978.74x = 366,416,410,490.72
5. Step 5: Solve for x
   x = 366,416,410,490.72/642,978.74
6. Step 6: Final answer
   x = 569,873.29