Finding the Fourth Proportional to 671,024.86, 1,006,412.27 and 215,624.00

Step by Step Solution

1. Step 1: Write the proportion equation
   671,024.86 : 1,006,412.27 = 215,624.00 : x
2. Step 2: Convert to fraction form
   671,024.86/1,006,412.27 = 215,624.00/x
3. Step 3: Cross multiply
   671,024.86x = 1,006,412.27 × 215,624.00
4. Step 4: Simplify right side
   671,024.86x = 217,006,633,196.30
5. Step 5: Solve for x
   x = 217,006,633,196.30/671,024.86
6. Step 6: Final answer
   x = 323,395.82