Finding the Fourth Proportional to 72,340.37, 99,820.72 and 40,504.13

Step by Step Solution

1. Step 1: Write the proportion equation
   72,340.37 : 99,820.72 = 40,504.13 : x
2. Step 2: Convert to fraction form
   72,340.37/99,820.72 = 40,504.13/x
3. Step 3: Cross multiply
   72,340.37x = 99,820.72 × 40,504.13
4. Step 4: Simplify right side
   72,340.37x = 4,043,151,419.57
5. Step 5: Solve for x
   x = 4,043,151,419.57/72,340.37
6. Step 6: Final answer
   x = 55,890.67