Finding the Fourth Proportional to 56,636.62, 78,159.43 and 31,144.10

Step by Step Solution

1. Step 1: Write the proportion equation
   56,636.62 : 78,159.43 = 31,144.10 : x
2. Step 2: Convert to fraction form
   56,636.62/78,159.43 = 31,144.10/x
3. Step 3: Cross multiply
   56,636.62x = 78,159.43 × 31,144.10
4. Step 4: Simplify right side
   56,636.62x = 2,434,204,752.00
5. Step 5: Solve for x
   x = 2,434,204,752.00/56,636.62
6. Step 6: Final answer
   x = 42,979.35