Finding the Fourth Proportional to 113,321.49, 156,314.73 and 81,533.43

Step by Step Solution

1. Step 1: Write the proportion equation
   113,321.49 : 156,314.73 = 81,533.43 : x
2. Step 2: Convert to fraction form
   113,321.49/156,314.73 = 81,533.43/x
3. Step 3: Cross multiply
   113,321.49x = 156,314.73 × 81,533.43
4. Step 4: Simplify right side
   113,321.49x = 12,744,876,096.42
5. Step 5: Solve for x
   x = 12,744,876,096.42/113,321.49
6. Step 6: Final answer
   x = 112,466.54