Finding the Fourth Proportional to 72,932.58, 100,647.09 and 42,311.61

Step by Step Solution

1. Step 1: Write the proportion equation
   72,932.58 : 100,647.09 = 42,311.61 : x
2. Step 2: Convert to fraction form
   72,932.58/100,647.09 = 42,311.61/x
3. Step 3: Cross multiply
   72,932.58x = 100,647.09 × 42,311.61
4. Step 4: Simplify right side
   72,932.58x = 4,258,540,419.71
5. Step 5: Solve for x
   x = 4,258,540,419.71/72,932.58
6. Step 6: Final answer
   x = 58,390.10