Finding the Fourth Proportional to 137,171.32, 189,300.42 and 76,740.54

Step by Step Solution

1. Step 1: Write the proportion equation
   137,171.32 : 189,300.42 = 76,740.54 : x
2. Step 2: Convert to fraction form
   137,171.32/189,300.42 = 76,740.54/x
3. Step 3: Cross multiply
   137,171.32x = 189,300.42 × 76,740.54
4. Step 4: Simplify right side
   137,171.32x = 14,527,016,453.03
5. Step 5: Solve for x
   x = 14,527,016,453.03/137,171.32
6. Step 6: Final answer
   x = 105,904.18