Finding the Fourth Proportional to 113,707.37, 156,944.31 and 77,468.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,707.37 : 156,944.31 = 77,468.78 : x
2. Step 2: Convert to fraction form
   113,707.37/156,944.31 = 77,468.78/x
3. Step 3: Cross multiply
   113,707.37x = 156,944.31 × 77,468.78
4. Step 4: Simplify right side
   113,707.37x = 12,158,284,223.64
5. Step 5: Solve for x
   x = 12,158,284,223.64/113,707.37
6. Step 6: Final answer
   x = 106,926.09