Finding the Fourth Proportional to 158,766.50, 219,100.25 and 87,153.05

Step by Step Solution

1. Step 1: Write the proportion equation
   158,766.50 : 219,100.25 = 87,153.05 : x
2. Step 2: Convert to fraction form
   158,766.50/219,100.25 = 87,153.05/x
3. Step 3: Cross multiply
   158,766.50x = 219,100.25 × 87,153.05
4. Step 4: Simplify right side
   158,766.50x = 19,095,254,331.34
5. Step 5: Solve for x
   x = 19,095,254,331.34/158,766.50
6. Step 6: Final answer
   x = 120,272.57