Finding the Fourth Proportional to 112,684.28, 168,780.78 and 56,426.27

Step by Step Solution

1. Step 1: Write the proportion equation
   112,684.28 : 168,780.78 = 56,426.27 : x
2. Step 2: Convert to fraction form
   112,684.28/168,780.78 = 56,426.27/x
3. Step 3: Cross multiply
   112,684.28x = 168,780.78 × 56,426.27
4. Step 4: Simplify right side
   112,684.28x = 9,523,669,019.19
5. Step 5: Solve for x
   x = 9,523,669,019.19/112,684.28
6. Step 6: Final answer
   x = 84,516.40