Finding the Fourth Proportional to 109,861.31, 164,523.25 and 99,211.73

Step by Step Solution

1. Step 1: Write the proportion equation
   109,861.31 : 164,523.25 = 99,211.73 : x
2. Step 2: Convert to fraction form
   109,861.31/164,523.25 = 99,211.73/x
3. Step 3: Cross multiply
   109,861.31x = 164,523.25 × 99,211.73
4. Step 4: Simplify right side
   109,861.31x = 16,322,635,559.12
5. Step 5: Solve for x
   x = 16,322,635,559.12/109,861.31
6. Step 6: Final answer
   x = 148,574.92