Finding the Fourth Proportional to 113,433.66, 156,738.78 and 89,748.45

Step by Step Solution

1. Step 1: Write the proportion equation
   113,433.66 : 156,738.78 = 89,748.45 : x
2. Step 2: Convert to fraction form
   113,433.66/156,738.78 = 89,748.45/x
3. Step 3: Cross multiply
   113,433.66x = 156,738.78 × 89,748.45
4. Step 4: Simplify right side
   113,433.66x = 14,067,062,559.89
5. Step 5: Solve for x
   x = 14,067,062,559.89/113,433.66
6. Step 6: Final answer
   x = 124,011.36