Finding the Fourth Proportional to 139,809.30, 209,276.55 and 110,066.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,809.30 : 209,276.55 = 110,066.10 : x
2. Step 2: Convert to fraction form
   139,809.30/209,276.55 = 110,066.10/x
3. Step 3: Cross multiply
   139,809.30x = 209,276.55 × 110,066.10
4. Step 4: Simplify right side
   139,809.30x = 23,034,253,679.96
5. Step 5: Solve for x
   x = 23,034,253,679.96/139,809.30
6. Step 6: Final answer
   x = 164,754.80