Finding the Fourth Proportional to 56,949.89, 78,588.81 and 31,455.86

Step by Step Solution

1. Step 1: Write the proportion equation
   56,949.89 : 78,588.81 = 31,455.86 : x
2. Step 2: Convert to fraction form
   56,949.89/78,588.81 = 31,455.86/x
3. Step 3: Cross multiply
   56,949.89x = 78,588.81 × 31,455.86
4. Step 4: Simplify right side
   56,949.89x = 2,472,078,211.98
5. Step 5: Solve for x
   x = 2,472,078,211.98/56,949.89
6. Step 6: Final answer
   x = 43,407.96