Finding the Fourth Proportional to 158,905.37, 219,290.72 and 87,287.00

Step by Step Solution

1. Step 1: Write the proportion equation
   158,905.37 : 219,290.72 = 87,287.00 : x
2. Step 2: Convert to fraction form
   158,905.37/219,290.72 = 87,287.00/x
3. Step 3: Cross multiply
   158,905.37x = 219,290.72 × 87,287.00
4. Step 4: Simplify right side
   158,905.37x = 19,141,227,543.75
5. Step 5: Solve for x
   x = 19,141,227,543.75/158,905.37
6. Step 6: Final answer
   x = 120,456.77