Finding the Fourth Proportional to 72,404.39, 99,756.96 and 54,173.03

Step by Step Solution

1. Step 1: Write the proportion equation
   72,404.39 : 99,756.96 = 54,173.03 : x
2. Step 2: Convert to fraction form
   72,404.39/99,756.96 = 54,173.03/x
3. Step 3: Cross multiply
   72,404.39x = 99,756.96 × 54,173.03
4. Step 4: Simplify right side
   72,404.39x = 5,404,136,288.00
5. Step 5: Solve for x
   x = 5,404,136,288.00/72,404.39
6. Step 6: Final answer
   x = 74,638.25