Finding the Fourth Proportional to 164,719, 227,312.42 and 89,267.50

Step by Step Solution

1. Step 1: Write the proportion equation
   164,719 : 227,312.42 = 89,267.50 : x
2. Step 2: Convert to fraction form
   164,719/227,312.42 = 89,267.50/x
3. Step 3: Cross multiply
   164,719x = 227,312.42 × 89,267.50
4. Step 4: Simplify right side
   164,719x = 20,291,611,452.35
5. Step 5: Solve for x
   x = 20,291,611,452.35/164,719
6. Step 6: Final answer
   x = 123,189.26