Finding the Fourth Proportional to 56,627.06, 78,145.87 and 31,133.61

Step by Step Solution

1. Step 1: Write the proportion equation
   56,627.06 : 78,145.87 = 31,133.61 : x
2. Step 2: Convert to fraction form
   56,627.06/78,145.87 = 31,133.61/x
3. Step 3: Cross multiply
   56,627.06x = 78,145.87 × 31,133.61
4. Step 4: Simplify right side
   56,627.06x = 2,432,963,039.69
5. Step 5: Solve for x
   x = 2,432,963,039.69/56,627.06
6. Step 6: Final answer
   x = 42,964.67