Finding the Fourth Proportional to 56,627.84, 78,144.77 and 31,134.18

Step by Step Solution

1. Step 1: Write the proportion equation
   56,627.84 : 78,144.77 = 31,134.18 : x
2. Step 2: Convert to fraction form
   56,627.84/78,144.77 = 31,134.18/x
3. Step 3: Cross multiply
   56,627.84x = 78,144.77 × 31,134.18
4. Step 4: Simplify right side
   56,627.84x = 2,432,972,984.21
5. Step 5: Solve for x
   x = 2,432,972,984.21/56,627.84
6. Step 6: Final answer
   x = 42,964.26