Finding the Fourth Proportional to 73,976.55, 101,967.68 and 57,815.31

Step by Step Solution

1. Step 1: Write the proportion equation
   73,976.55 : 101,967.68 = 57,815.31 : x
2. Step 2: Convert to fraction form
   73,976.55/101,967.68 = 57,815.31/x
3. Step 3: Cross multiply
   73,976.55x = 101,967.68 × 57,815.31
4. Step 4: Simplify right side
   73,976.55x = 5,895,293,029.18
5. Step 5: Solve for x
   x = 5,895,293,029.18/73,976.55
6. Step 6: Final answer
   x = 79,691.38