Finding the Fourth Proportional to 137,262.05, 189,423.57 and 79,086.64

Step by Step Solution

1. Step 1: Write the proportion equation
   137,262.05 : 189,423.57 = 79,086.64 : x
2. Step 2: Convert to fraction form
   137,262.05/189,423.57 = 79,086.64/x
3. Step 3: Cross multiply
   137,262.05x = 189,423.57 × 79,086.64
4. Step 4: Simplify right side
   137,262.05x = 14,980,873,016.83
5. Step 5: Solve for x
   x = 14,980,873,016.83/137,262.05
6. Step 6: Final answer
   x = 109,140.67