Finding the Fourth Proportional to 85,909.64, 118,509.50 and 50,086.56

Step by Step Solution

1. Step 1: Write the proportion equation
   85,909.64 : 118,509.50 = 50,086.56 : x
2. Step 2: Convert to fraction form
   85,909.64/118,509.50 = 50,086.56/x
3. Step 3: Cross multiply
   85,909.64x = 118,509.50 × 50,086.56
4. Step 4: Simplify right side
   85,909.64x = 5,935,733,182.32
5. Step 5: Solve for x
   x = 5,935,733,182.32/85,909.64
6. Step 6: Final answer
   x = 69,092.75