Finding the Fourth Proportional to 158,709.57, 219,019.59 and 87,090.18

Step by Step Solution

1. Step 1: Write the proportion equation
   158,709.57 : 219,019.59 = 87,090.18 : x
2. Step 2: Convert to fraction form
   158,709.57/219,019.59 = 87,090.18/x
3. Step 3: Cross multiply
   158,709.57x = 219,019.59 × 87,090.18
4. Step 4: Simplify right side
   158,709.57x = 19,074,455,516.63
5. Step 5: Solve for x
   x = 19,074,455,516.63/158,709.57
6. Step 6: Final answer
   x = 120,184.66