Finding the Fourth Proportional to 72,256.55, 99,748.13 and 54,358.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,256.55 : 99,748.13 = 54,358.38 : x
2. Step 2: Convert to fraction form
   72,256.55/99,748.13 = 54,358.38/x
3. Step 3: Cross multiply
   72,256.55x = 99,748.13 × 54,358.38
4. Step 4: Simplify right side
   72,256.55x = 5,422,146,483.04
5. Step 5: Solve for x
   x = 5,422,146,483.04/72,256.55
6. Step 6: Final answer
   x = 75,040.21