Finding the Fourth Proportional to 72,084.24, 99,386.28 and 55,109.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,084.24 : 99,386.28 = 55,109.52 : x
2. Step 2: Convert to fraction form
   72,084.24/99,386.28 = 55,109.52/x
3. Step 3: Cross multiply
   72,084.24x = 99,386.28 × 55,109.52
4. Step 4: Simplify right side
   72,084.24x = 5,477,130,185.39
5. Step 5: Solve for x
   x = 5,477,130,185.39/72,084.24
6. Step 6: Final answer
   x = 75,982.35