Finding the Fourth Proportional to 106,932.32, 160,403.76 and 28,046.72

Step by Step Solution

1. Step 1: Write the proportion equation
   106,932.32 : 160,403.76 = 28,046.72 : x
2. Step 2: Convert to fraction form
   106,932.32/160,403.76 = 28,046.72/x
3. Step 3: Cross multiply
   106,932.32x = 160,403.76 × 28,046.72
4. Step 4: Simplify right side
   106,932.32x = 4,498,799,343.67
5. Step 5: Solve for x
   x = 4,498,799,343.67/106,932.32
6. Step 6: Final answer
   x = 42,071.46