Finding the Fourth Proportional to 56,772.01, 78,347.42 and 31,279.49

Step by Step Solution

1. Step 1: Write the proportion equation
   56,772.01 : 78,347.42 = 31,279.49 : x
2. Step 2: Convert to fraction form
   56,772.01/78,347.42 = 31,279.49/x
3. Step 3: Cross multiply
   56,772.01x = 78,347.42 × 31,279.49
4. Step 4: Simplify right side
   56,772.01x = 2,450,667,340.42
5. Step 5: Solve for x
   x = 2,450,667,340.42/56,772.01
6. Step 6: Final answer
   x = 43,166.82