Finding the Fourth Proportional to 117,234.81, 175,849.79 and 28,488.78

Step by Step Solution

1. Step 1: Write the proportion equation
   117,234.81 : 175,849.79 = 28,488.78 : x
2. Step 2: Convert to fraction form
   117,234.81/175,849.79 = 28,488.78/x
3. Step 3: Cross multiply
   117,234.81x = 175,849.79 × 28,488.78
4. Step 4: Simplify right side
   117,234.81x = 5,009,745,837.91
5. Step 5: Solve for x
   x = 5,009,745,837.91/117,234.81
6. Step 6: Final answer
   x = 42,732.58