Finding the Fourth Proportional to 117,665.79, 176,519.85 and 42,890.85

Step by Step Solution

1. Step 1: Write the proportion equation
   117,665.79 : 176,519.85 = 42,890.85 : x
2. Step 2: Convert to fraction form
   117,665.79/176,519.85 = 42,890.85/x
3. Step 3: Cross multiply
   117,665.79x = 176,519.85 × 42,890.85
4. Step 4: Simplify right side
   117,665.79x = 7,571,086,408.37
5. Step 5: Solve for x
   x = 7,571,086,408.37/117,665.79
6. Step 6: Final answer
   x = 64,343.99