Finding the Fourth Proportional to 72,291.67, 99,762.49 and 40,460.57

Step by Step Solution

1. Step 1: Write the proportion equation
   72,291.67 : 99,762.49 = 40,460.57 : x
2. Step 2: Convert to fraction form
   72,291.67/99,762.49 = 40,460.57/x
3. Step 3: Cross multiply
   72,291.67x = 99,762.49 × 40,460.57
4. Step 4: Simplify right side
   72,291.67x = 4,036,447,210.02
5. Step 5: Solve for x
   x = 4,036,447,210.02/72,291.67
6. Step 6: Final answer
   x = 55,835.58