Finding the Fourth Proportional to 671,026.37, 1,006,414.52 and 215,625.50

Step by Step Solution

1. Step 1: Write the proportion equation
   671,026.37 : 1,006,414.52 = 215,625.50 : x
2. Step 2: Convert to fraction form
   671,026.37/1,006,414.52 = 215,625.50/x
3. Step 3: Cross multiply
   671,026.37x = 1,006,414.52 × 215,625.50
4. Step 4: Simplify right side
   671,026.37x = 217,008,627,972.06
5. Step 5: Solve for x
   x = 217,008,627,972.06/671,026.37
6. Step 6: Final answer
   x = 323,398.06