Finding the Fourth Proportional to 137,091.83, 189,185.42 and 76,661.78

Step by Step Solution

1. Step 1: Write the proportion equation
   137,091.83 : 189,185.42 = 76,661.78 : x
2. Step 2: Convert to fraction form
   137,091.83/189,185.42 = 76,661.78/x
3. Step 3: Cross multiply
   137,091.83x = 189,185.42 × 76,661.78
4. Step 4: Simplify right side
   137,091.83x = 14,503,289,718.01
5. Step 5: Solve for x
   x = 14,503,289,718.01/137,091.83
6. Step 6: Final answer
   x = 105,792.52