Finding the Fourth Proportional to 72,315.01, 99,804.68 and 43,636.15

Step by Step Solution

1. Step 1: Write the proportion equation
   72,315.01 : 99,804.68 = 43,636.15 : x
2. Step 2: Convert to fraction form
   72,315.01/99,804.68 = 43,636.15/x
3. Step 3: Cross multiply
   72,315.01x = 99,804.68 × 43,636.15
4. Step 4: Simplify right side
   72,315.01x = 4,355,091,987.18
5. Step 5: Solve for x
   x = 4,355,091,987.18/72,315.01
6. Step 6: Final answer
   x = 60,223.90