Finding the Fourth Proportional to 158,520.83, 218,772.54 and 86,914.50

Step by Step Solution

1. Step 1: Write the proportion equation
   158,520.83 : 218,772.54 = 86,914.50 : x
2. Step 2: Convert to fraction form
   158,520.83/218,772.54 = 86,914.50/x
3. Step 3: Cross multiply
   158,520.83x = 218,772.54 × 86,914.50
4. Step 4: Simplify right side
   158,520.83x = 19,014,505,927.83
5. Step 5: Solve for x
   x = 19,014,505,927.83/158,520.83
6. Step 6: Final answer
   x = 119,949.58