Finding the Fourth Proportional to 58,016.76, 86,957.79 and 21,970.30

Step by Step Solution

1. Step 1: Write the proportion equation
   58,016.76 : 86,957.79 = 21,970.30 : x
2. Step 2: Convert to fraction form
   58,016.76/86,957.79 = 21,970.30/x
3. Step 3: Cross multiply
   58,016.76x = 86,957.79 × 21,970.30
4. Step 4: Simplify right side
   58,016.76x = 1,910,488,576.88
5. Step 5: Solve for x
   x = 1,910,488,576.88/58,016.76
6. Step 6: Final answer
   x = 32,929.94