Finding the Fourth Proportional to 81,073.98, 121,611.37 and 36,648.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,073.98 : 121,611.37 = 36,648.72 : x
2. Step 2: Convert to fraction form
   81,073.98/121,611.37 = 36,648.72/x
3. Step 3: Cross multiply
   81,073.98x = 121,611.37 × 36,648.72
4. Step 4: Simplify right side
   81,073.98x = 4,456,901,047.95
5. Step 5: Solve for x
   x = 4,456,901,047.95/81,073.98
6. Step 6: Final answer
   x = 54,973.26