Finding the Fourth Proportional to 112,996.45, 169,495.62 and 28,756.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,996.45 : 169,495.62 = 28,756.72 : x
2. Step 2: Convert to fraction form
   112,996.45/169,495.62 = 28,756.72/x
3. Step 3: Cross multiply
   112,996.45x = 169,495.62 × 28,756.72
4. Step 4: Simplify right side
   112,996.45x = 4,874,138,085.57
5. Step 5: Solve for x
   x = 4,874,138,085.57/112,996.45
6. Step 6: Final answer
   x = 43,135.32