Finding the Fourth Proportional to 72,118.02, 99,521.16 and 40,286.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,118.02 : 99,521.16 = 40,286.82 : x
2. Step 2: Convert to fraction form
   72,118.02/99,521.16 = 40,286.82/x
3. Step 3: Cross multiply
   72,118.02x = 99,521.16 × 40,286.82
4. Step 4: Simplify right side
   72,118.02x = 4,009,391,059.11
5. Step 5: Solve for x
   x = 4,009,391,059.11/72,118.02
6. Step 6: Final answer
   x = 55,594.86