Finding the Fourth Proportional to 56,636.51, 78,160.09 and 31,141.56

Step by Step Solution

1. Step 1: Write the proportion equation
   56,636.51 : 78,160.09 = 31,141.56 : x
2. Step 2: Convert to fraction form
   56,636.51/78,160.09 = 31,141.56/x
3. Step 3: Cross multiply
   56,636.51x = 78,160.09 × 31,141.56
4. Step 4: Simplify right side
   56,636.51x = 2,434,026,976.63
5. Step 5: Solve for x
   x = 2,434,026,976.63/56,636.51
6. Step 6: Final answer
   x = 42,976.29