Finding the Fourth Proportional to 112,446.72, 168,462.72 and 56,977.92

Step by Step Solution

1. Step 1: Write the proportion equation
   112,446.72 : 168,462.72 = 56,977.92 : x
2. Step 2: Convert to fraction form
   112,446.72/168,462.72 = 56,977.92/x
3. Step 3: Cross multiply
   112,446.72x = 168,462.72 × 56,977.92
4. Step 4: Simplify right side
   112,446.72x = 9,598,655,383.14
5. Step 5: Solve for x
   x = 9,598,655,383.14/112,446.72
6. Step 6: Final answer
   x = 85,361.81