Finding the Fourth Proportional to 72,404.10, 108,606.15 and 54,908.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,404.10 : 108,606.15 = 54,908.10 : x
2. Step 2: Convert to fraction form
   72,404.10/108,606.15 = 54,908.10/x
3. Step 3: Cross multiply
   72,404.10x = 108,606.15 × 54,908.10
4. Step 4: Simplify right side
   72,404.10x = 5,963,357,344.82
5. Step 5: Solve for x
   x = 5,963,357,344.82/72,404.10
6. Step 6: Final answer
   x = 82,362.15