Finding the Fourth Proportional to 446,638.73, 670,061.72 and 147,108.56

Step by Step Solution

1. Step 1: Write the proportion equation
   446,638.73 : 670,061.72 = 147,108.56 : x
2. Step 2: Convert to fraction form
   446,638.73/670,061.72 = 147,108.56/x
3. Step 3: Cross multiply
   446,638.73x = 670,061.72 × 147,108.56
4. Step 4: Simplify right side
   446,638.73x = 98,571,810,654.47
5. Step 5: Solve for x
   x = 98,571,810,654.47/446,638.73
6. Step 6: Final answer
   x = 220,696.96