Finding the Fourth Proportional to 72,448.80, 99,977.82 and 40,617.02

Step by Step Solution

1. Step 1: Write the proportion equation
   72,448.80 : 99,977.82 = 40,617.02 : x
2. Step 2: Convert to fraction form
   72,448.80/99,977.82 = 40,617.02/x
3. Step 3: Cross multiply
   72,448.80x = 99,977.82 × 40,617.02
4. Step 4: Simplify right side
   72,448.80x = 4,060,801,114.50
5. Step 5: Solve for x
   x = 4,060,801,114.50/72,448.80
6. Step 6: Final answer
   x = 56,050.63