Finding the Fourth Proportional to 56,636.55, 78,158.73 and 31,144.56

Step by Step Solution

1. Step 1: Write the proportion equation
   56,636.55 : 78,158.73 = 31,144.56 : x
2. Step 2: Convert to fraction form
   56,636.55/78,158.73 = 31,144.56/x
3. Step 3: Cross multiply
   56,636.55x = 78,158.73 × 31,144.56
4. Step 4: Simplify right side
   56,636.55x = 2,434,219,256.01
5. Step 5: Solve for x
   x = 2,434,219,256.01/56,636.55
6. Step 6: Final answer
   x = 42,979.65