Finding the Fourth Proportional to 139,815.96, 209,548.80 and 110,116.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,815.96 : 209,548.80 = 110,116.50 : x
2. Step 2: Convert to fraction form
   139,815.96/209,548.80 = 110,116.50/x
3. Step 3: Cross multiply
   139,815.96x = 209,548.80 × 110,116.50
4. Step 4: Simplify right side
   139,815.96x = 23,074,780,435.20
5. Step 5: Solve for x
   x = 23,074,780,435.20/139,815.96
6. Step 6: Final answer
   x = 165,036.81