Finding the Fourth Proportional to 113,528.88, 156,663.24 and 83,440.56

Step by Step Solution

1. Step 1: Write the proportion equation
   113,528.88 : 156,663.24 = 83,440.56 : x
2. Step 2: Convert to fraction form
   113,528.88/156,663.24 = 83,440.56/x
3. Step 3: Cross multiply
   113,528.88x = 156,663.24 × 83,440.56
4. Step 4: Simplify right side
   113,528.88x = 13,072,068,477.01
5. Step 5: Solve for x
   x = 13,072,068,477.01/113,528.88
6. Step 6: Final answer
   x = 115,143.11