Finding the Fourth Proportional to 147,086.53, 202,973.01 and 81,671.28

Step by Step Solution

1. Step 1: Write the proportion equation
   147,086.53 : 202,973.01 = 81,671.28 : x
2. Step 2: Convert to fraction form
   147,086.53/202,973.01 = 81,671.28/x
3. Step 3: Cross multiply
   147,086.53x = 202,973.01 × 81,671.28
4. Step 4: Simplify right side
   147,086.53x = 16,577,065,532.15
5. Step 5: Solve for x
   x = 16,577,065,532.15/147,086.53
6. Step 6: Final answer
   x = 112,702.81