Finding the Fourth Proportional to 82,749.30, 113,835.69 and 72,494.15

Step by Step Solution

1. Step 1: Write the proportion equation
   82,749.30 : 113,835.69 = 72,494.15 : x
2. Step 2: Convert to fraction form
   82,749.30/113,835.69 = 72,494.15/x
3. Step 3: Cross multiply
   82,749.30x = 113,835.69 × 72,494.15
4. Step 4: Simplify right side
   82,749.30x = 8,252,422,148.76
5. Step 5: Solve for x
   x = 8,252,422,148.76/82,749.30
6. Step 6: Final answer
   x = 99,728.00