Finding the Fourth Proportional to 87,816.48, 131,618.64 and 42,770.33

Step by Step Solution

1. Step 1: Write the proportion equation
   87,816.48 : 131,618.64 = 42,770.33 : x
2. Step 2: Convert to fraction form
   87,816.48/131,618.64 = 42,770.33/x
3. Step 3: Cross multiply
   87,816.48x = 131,618.64 × 42,770.33
4. Step 4: Simplify right side
   87,816.48x = 5,629,372,008.86
5. Step 5: Solve for x
   x = 5,629,372,008.86/87,816.48
6. Step 6: Final answer
   x = 64,103.82