Finding the Fourth Proportional to 56,582.81, 78,084.83 and 31,088.77

Step by Step Solution

1. Step 1: Write the proportion equation
   56,582.81 : 78,084.83 = 31,088.77 : x
2. Step 2: Convert to fraction form
   56,582.81/78,084.83 = 31,088.77/x
3. Step 3: Cross multiply
   56,582.81x = 78,084.83 × 31,088.77
4. Step 4: Simplify right side
   56,582.81x = 2,427,560,929.93
5. Step 5: Solve for x
   x = 2,427,560,929.93/56,582.81
6. Step 6: Final answer
   x = 42,902.80