Finding the Fourth Proportional to 58,326, 80,489.88 and 31,830

Step by Step Solution

1. Step 1: Write the proportion equation
   58,326 : 80,489.88 = 31,830 : x
2. Step 2: Convert to fraction form
   58,326/80,489.88 = 31,830/x
3. Step 3: Cross multiply
   58,326x = 80,489.88 × 31,830
4. Step 4: Simplify right side
   58,326x = 2,561,992,880.40
5. Step 5: Solve for x
   x = 2,561,992,880.40/58,326
6. Step 6: Final answer
   x = 43,925.40