Finding the Fourth Proportional to 147,096.53, 202,986.79 and 81,681.30

Step by Step Solution

1. Step 1: Write the proportion equation
   147,096.53 : 202,986.79 = 81,681.30 : x
2. Step 2: Convert to fraction form
   147,096.53/202,986.79 = 81,681.30/x
3. Step 3: Cross multiply
   147,096.53x = 202,986.79 × 81,681.30
4. Step 4: Simplify right side
   147,096.53x = 16,580,224,890.03
5. Step 5: Solve for x
   x = 16,580,224,890.03/147,096.53
6. Step 6: Final answer
   x = 112,716.63