Finding the Fourth Proportional to 91,932.36, 126,880.38 and 56,142.96

Step by Step Solution

1. Step 1: Write the proportion equation
   91,932.36 : 126,880.38 = 56,142.96 : x
2. Step 2: Convert to fraction form
   91,932.36/126,880.38 = 56,142.96/x
3. Step 3: Cross multiply
   91,932.36x = 126,880.38 × 56,142.96
4. Step 4: Simplify right side
   91,932.36x = 7,123,440,099.12
5. Step 5: Solve for x
   x = 7,123,440,099.12/91,932.36
6. Step 6: Final answer
   x = 77,485.67