Finding the Fourth Proportional to 58,499.34, 80,728.80 and 31,641.80

Step by Step Solution

1. Step 1: Write the proportion equation
   58,499.34 : 80,728.80 = 31,641.80 : x
2. Step 2: Convert to fraction form
   58,499.34/80,728.80 = 31,641.80/x
3. Step 3: Cross multiply
   58,499.34x = 80,728.80 × 31,641.80
4. Step 4: Simplify right side
   58,499.34x = 2,554,404,140.20
5. Step 5: Solve for x
   x = 2,554,404,140.20/58,499.34
6. Step 6: Final answer
   x = 43,665.52