Finding the Fourth Proportional to 162,211.62, 223,728.71 and 139,588.32

Step by Step Solution

1. Step 1: Write the proportion equation
   162,211.62 : 223,728.71 = 139,588.32 : x
2. Step 2: Convert to fraction form
   162,211.62/223,728.71 = 139,588.32/x
3. Step 3: Cross multiply
   162,211.62x = 223,728.71 × 139,588.32
4. Step 4: Simplify right side
   162,211.62x = 31,229,914,066.73
5. Step 5: Solve for x
   x = 31,229,914,066.73/162,211.62
6. Step 6: Final answer
   x = 192,525.75