Finding the Fourth Proportional to 58,017.89, 86,959.48 and 21,971.43

Step by Step Solution

1. Step 1: Write the proportion equation
   58,017.89 : 86,959.48 = 21,971.43 : x
2. Step 2: Convert to fraction form
   58,017.89/86,959.48 = 21,971.43/x
3. Step 3: Cross multiply
   58,017.89x = 86,959.48 × 21,971.43
4. Step 4: Simplify right side
   58,017.89x = 1,910,623,583.00
5. Step 5: Solve for x
   x = 1,910,623,583.00/58,017.89
6. Step 6: Final answer
   x = 32,931.63