Finding the Fourth Proportional to 158,619.34, 218,908.73 and 87,013.31

Step by Step Solution

1. Step 1: Write the proportion equation
   158,619.34 : 218,908.73 = 87,013.31 : x
2. Step 2: Convert to fraction form
   158,619.34/218,908.73 = 87,013.31/x
3. Step 3: Cross multiply
   158,619.34x = 218,908.73 × 87,013.31
4. Step 4: Simplify right side
   158,619.34x = 19,047,973,950.00
5. Step 5: Solve for x
   x = 19,047,973,950.00/158,619.34
6. Step 6: Final answer
   x = 120,086.08