Finding the Fourth Proportional to 140,620.56, 194,051.59 and 80,210.76

Step by Step Solution

1. Step 1: Write the proportion equation
   140,620.56 : 194,051.59 = 80,210.76 : x
2. Step 2: Convert to fraction form
   140,620.56/194,051.59 = 80,210.76/x
3. Step 3: Cross multiply
   140,620.56x = 194,051.59 × 80,210.76
4. Step 4: Simplify right side
   140,620.56x = 15,565,025,513.11
5. Step 5: Solve for x
   x = 15,565,025,513.11/140,620.56
6. Step 6: Final answer
   x = 110,688.12