Finding the Fourth Proportional to 86,505.34, 119,381.46 and 48,778.78

Step by Step Solution

1. Step 1: Write the proportion equation
   86,505.34 : 119,381.46 = 48,778.78 : x
2. Step 2: Convert to fraction form
   86,505.34/119,381.46 = 48,778.78/x
3. Step 3: Cross multiply
   86,505.34x = 119,381.46 × 48,778.78
4. Step 4: Simplify right side
   86,505.34x = 5,823,281,973.42
5. Step 5: Solve for x
   x = 5,823,281,973.42/86,505.34
6. Step 6: Final answer
   x = 67,317.02