Finding the Fourth Proportional to 72,494.10, 108,741.15 and 54,998.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,494.10 : 108,741.15 = 54,998.10 : x
2. Step 2: Convert to fraction form
   72,494.10/108,741.15 = 54,998.10/x
3. Step 3: Cross multiply
   72,494.10x = 108,741.15 × 54,998.10
4. Step 4: Simplify right side
   72,494.10x = 5,980,556,641.82
5. Step 5: Solve for x
   x = 5,980,556,641.82/72,494.10
6. Step 6: Final answer
   x = 82,497.15