Finding the Fourth Proportional to 83,678.09, 115,459.50 and 49,697.22

Step by Step Solution

1. Step 1: Write the proportion equation
   83,678.09 : 115,459.50 = 49,697.22 : x
2. Step 2: Convert to fraction form
   83,678.09/115,459.50 = 49,697.22/x
3. Step 3: Cross multiply
   83,678.09x = 115,459.50 × 49,697.22
4. Step 4: Simplify right side
   83,678.09x = 5,738,016,172.59
5. Step 5: Solve for x
   x = 5,738,016,172.59/83,678.09
6. Step 6: Final answer
   x = 68,572.51