Finding the Fourth Proportional to 113,714.37, 156,953.97 and 77,475.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,714.37 : 156,953.97 = 77,475.78 : x
2. Step 2: Convert to fraction form
   113,714.37/156,953.97 = 77,475.78/x
3. Step 3: Cross multiply
   113,714.37x = 156,953.97 × 77,475.78
4. Step 4: Simplify right side
   113,714.37x = 12,160,131,249.85
5. Step 5: Solve for x
   x = 12,160,131,249.85/113,714.37
6. Step 6: Final answer
   x = 106,935.75