Finding the Fourth Proportional to 660,100.06, 910,166.53 and 612,270.37

Step by Step Solution

1. Step 1: Write the proportion equation
   660,100.06 : 910,166.53 = 612,270.37 : x
2. Step 2: Convert to fraction form
   660,100.06/910,166.53 = 612,270.37/x
3. Step 3: Cross multiply
   660,100.06x = 910,166.53 × 612,270.37
4. Step 4: Simplify right side
   660,100.06x = 557,267,998,084.72
5. Step 5: Solve for x
   x = 557,267,998,084.72/660,100.06
6. Step 6: Final answer
   x = 844,217.46