Finding the Fourth Proportional to 72,328.01, 99,812.81 and 40,498.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72,328.01 : 99,812.81 = 40,498.25 : x
2. Step 2: Convert to fraction form
   72,328.01/99,812.81 = 40,498.25/x
3. Step 3: Cross multiply
   72,328.01x = 99,812.81 × 40,498.25
4. Step 4: Simplify right side
   72,328.01x = 4,042,244,132.58
5. Step 5: Solve for x
   x = 4,042,244,132.58/72,328.01
6. Step 6: Final answer
   x = 55,887.67