Finding the Fourth Proportional to 117,205.29, 175,806.63 and 28,458.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,205.29 : 175,806.63 = 28,458.72 : x
2. Step 2: Convert to fraction form
   117,205.29/175,806.63 = 28,458.72/x
3. Step 3: Cross multiply
   117,205.29x = 175,806.63 × 28,458.72
4. Step 4: Simplify right side
   117,205.29x = 5,003,231,657.31
5. Step 5: Solve for x
   x = 5,003,231,657.31/117,205.29
6. Step 6: Final answer
   x = 42,687.76