Finding the Fourth Proportional to 72,086.24, 99,389.04 and 55,111.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,086.24 : 99,389.04 = 55,111.52 : x
2. Step 2: Convert to fraction form
   72,086.24/99,389.04 = 55,111.52/x
3. Step 3: Cross multiply
   72,086.24x = 99,389.04 × 55,111.52
4. Step 4: Simplify right side
   72,086.24x = 5,477,481,065.74
5. Step 5: Solve for x
   x = 5,477,481,065.74/72,086.24
6. Step 6: Final answer
   x = 75,985.11