Finding the Fourth Proportional to 55,715.48, 76,885.98 and 31,185.95

Step by Step Solution

1. Step 1: Write the proportion equation
   55,715.48 : 76,885.98 = 31,185.95 : x
2. Step 2: Convert to fraction form
   55,715.48/76,885.98 = 31,185.95/x
3. Step 3: Cross multiply
   55,715.48x = 76,885.98 × 31,185.95
4. Step 4: Simplify right side
   55,715.48x = 2,397,761,826.60
5. Step 5: Solve for x
   x = 2,397,761,826.60/55,715.48
6. Step 6: Final answer
   x = 43,035.83