Finding the Fourth Proportional to 56,583.20, 78,086.15 and 31,089.33

Step by Step Solution

1. Step 1: Write the proportion equation
   56,583.20 : 78,086.15 = 31,089.33 : x
2. Step 2: Convert to fraction form
   56,583.20/78,086.15 = 31,089.33/x
3. Step 3: Cross multiply
   56,583.20x = 78,086.15 × 31,089.33
4. Step 4: Simplify right side
   56,583.20x = 2,427,646,085.78
5. Step 5: Solve for x
   x = 2,427,646,085.78/56,583.20
6. Step 6: Final answer
   x = 42,904.01