Finding the Fourth Proportional to 56,733.12, 78,288.66 and 31,581

Step by Step Solution

1. Step 1: Write the proportion equation
   56,733.12 : 78,288.66 = 31,581 : x
2. Step 2: Convert to fraction form
   56,733.12/78,288.66 = 31,581/x
3. Step 3: Cross multiply
   56,733.12x = 78,288.66 × 31,581
4. Step 4: Simplify right side
   56,733.12x = 2,472,434,171.46
5. Step 5: Solve for x
   x = 2,472,434,171.46/56,733.12
6. Step 6: Final answer
   x = 43,580.08