Finding the Fourth Proportional to 71,900.10, 107,850.15 and 54,404.10

Step by Step Solution

1. Step 1: Write the proportion equation
   71,900.10 : 107,850.15 = 54,404.10 : x
2. Step 2: Convert to fraction form
   71,900.10/107,850.15 = 54,404.10/x
3. Step 3: Cross multiply
   71,900.10x = 107,850.15 × 54,404.10
4. Step 4: Simplify right side
   71,900.10x = 5,867,490,345.62
5. Step 5: Solve for x
   x = 5,867,490,345.62/71,900.10
6. Step 6: Final answer
   x = 81,606.15