Finding the Fourth Proportional to 373,989, 561,012.72 and 124,671

Step by Step Solution

1. Step 1: Write the proportion equation
   373,989 : 561,012.72 = 124,671 : x
2. Step 2: Convert to fraction form
   373,989/561,012.72 = 124,671/x
3. Step 3: Cross multiply
   373,989x = 561,012.72 × 124,671
4. Step 4: Simplify right side
   373,989x = 69,942,016,815.12
5. Step 5: Solve for x
   x = 69,942,016,815.12/373,989
6. Step 6: Final answer
   x = 187,016.24