Finding the Fourth Proportional to 81,868.98, 112,993 and 47,408.70

Step by Step Solution

1. Step 1: Write the proportion equation
   81,868.98 : 112,993 = 47,408.70 : x
2. Step 2: Convert to fraction form
   81,868.98/112,993 = 47,408.70/x
3. Step 3: Cross multiply
   81,868.98x = 112,993 × 47,408.70
4. Step 4: Simplify right side
   81,868.98x = 5,356,851,239.10
5. Step 5: Solve for x
   x = 5,356,851,239.10/81,868.98
6. Step 6: Final answer
   x = 65,432.00