Finding the Fourth Proportional to 39,977, 55,116.98 and 32,780.40

Step by Step Solution

1. Step 1: Write the proportion equation
   39,977 : 55,116.98 = 32,780.40 : x
2. Step 2: Convert to fraction form
   39,977/55,116.98 = 32,780.40/x
3. Step 3: Cross multiply
   39,977x = 55,116.98 × 32,780.40
4. Step 4: Simplify right side
   39,977x = 1,806,756,651.19
5. Step 5: Solve for x
   x = 1,806,756,651.19/39,977
6. Step 6: Final answer
   x = 45,194.90