Finding the Fourth Proportional to 59,439.59, 89,171.06 and 21,999.99

Step by Step Solution

1. Step 1: Write the proportion equation
   59,439.59 : 89,171.06 = 21,999.99 : x
2. Step 2: Convert to fraction form
   59,439.59/89,171.06 = 21,999.99/x
3. Step 3: Cross multiply
   59,439.59x = 89,171.06 × 21,999.99
4. Step 4: Simplify right side
   59,439.59x = 1,961,762,428.29
5. Step 5: Solve for x
   x = 1,961,762,428.29/59,439.59
6. Step 6: Final answer
   x = 33,004.31