Finding the Fourth Proportional to 81,379, 112,293.57 and 47,394.91

Step by Step Solution

1. Step 1: Write the proportion equation
   81,379 : 112,293.57 = 47,394.91 : x
2. Step 2: Convert to fraction form
   81,379/112,293.57 = 47,394.91/x
3. Step 3: Cross multiply
   81,379x = 112,293.57 × 47,394.91
4. Step 4: Simplify right side
   81,379x = 5,322,143,643.73
5. Step 5: Solve for x
   x = 5,322,143,643.73/81,379
6. Step 6: Final answer
   x = 65,399.47