Finding the Fourth Proportional to 56,882.86, 78,503.30 and 31,391.62

Step by Step Solution

1. Step 1: Write the proportion equation
   56,882.86 : 78,503.30 = 31,391.62 : x
2. Step 2: Convert to fraction form
   56,882.86/78,503.30 = 31,391.62/x
3. Step 3: Cross multiply
   56,882.86x = 78,503.30 × 31,391.62
4. Step 4: Simplify right side
   56,882.86x = 2,464,345,762.35
5. Step 5: Solve for x
   x = 2,464,345,762.35/56,882.86
6. Step 6: Final answer
   x = 43,323.17