Finding the Fourth Proportional to 56,818.72, 78,409.92 and 31,667.68

Step by Step Solution

1. Step 1: Write the proportion equation
   56,818.72 : 78,409.92 = 31,667.68 : x
2. Step 2: Convert to fraction form
   56,818.72/78,409.92 = 31,667.68/x
3. Step 3: Cross multiply
   56,818.72x = 78,409.92 × 31,667.68
4. Step 4: Simplify right side
   56,818.72x = 2,483,060,255.39
5. Step 5: Solve for x
   x = 2,483,060,255.39/56,818.72
6. Step 6: Final answer
   x = 43,701.45