Finding the Fourth Proportional to 56,743.76, 78,305 and 31,592.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,743.76 : 78,305 = 31,592.72 : x
2. Step 2: Convert to fraction form
   56,743.76/78,305 = 31,592.72/x
3. Step 3: Cross multiply
   56,743.76x = 78,305 × 31,592.72
4. Step 4: Simplify right side
   56,743.76x = 2,473,867,939.60
5. Step 5: Solve for x
   x = 2,473,867,939.60/56,743.76
6. Step 6: Final answer
   x = 43,597.18