Finding the Fourth Proportional to 57,816.12, 86,684.71 and 30,802.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,816.12 : 86,684.71 = 30,802.50 : x
2. Step 2: Convert to fraction form
   57,816.12/86,684.71 = 30,802.50/x
3. Step 3: Cross multiply
   57,816.12x = 86,684.71 × 30,802.50
4. Step 4: Simplify right side
   57,816.12x = 2,670,105,702.77
5. Step 5: Solve for x
   x = 2,670,105,702.77/57,816.12
6. Step 6: Final answer
   x = 46,182.72