Finding the Fourth Proportional to 56,910.42, 78,543.81 and 31,765.14

Step by Step Solution

1. Step 1: Write the proportion equation
   56,910.42 : 78,543.81 = 31,765.14 : x
2. Step 2: Convert to fraction form
   56,910.42/78,543.81 = 31,765.14/x
3. Step 3: Cross multiply
   56,910.42x = 78,543.81 × 31,765.14
4. Step 4: Simplify right side
   56,910.42x = 2,494,955,120.78
5. Step 5: Solve for x
   x = 2,494,955,120.78/56,910.42
6. Step 6: Final answer
   x = 43,840.04