Finding the Fourth Proportional to 112,320.82, 168,480.55 and 28,080.58

Step by Step Solution

1. Step 1: Write the proportion equation
   112,320.82 : 168,480.55 = 28,080.58 : x
2. Step 2: Convert to fraction form
   112,320.82/168,480.55 = 28,080.58/x
3. Step 3: Cross multiply
   112,320.82x = 168,480.55 × 28,080.58
4. Step 4: Simplify right side
   112,320.82x = 4,731,031,562.72
5. Step 5: Solve for x
   x = 4,731,031,562.72/112,320.82
6. Step 6: Final answer
   x = 42,120.70