Finding the Fourth Proportional to 72,362.53, 99,859.12 and 40,531.33

Step by Step Solution

1. Step 1: Write the proportion equation
   72,362.53 : 99,859.12 = 40,531.33 : x
2. Step 2: Convert to fraction form
   72,362.53/99,859.12 = 40,531.33/x
3. Step 3: Cross multiply
   72,362.53x = 99,859.12 × 40,531.33
4. Step 4: Simplify right side
   72,362.53x = 4,047,422,946.23
5. Step 5: Solve for x
   x = 4,047,422,946.23/72,362.53
6. Step 6: Final answer
   x = 55,932.58