Finding the Fourth Proportional to 59,905.24, 89,848.32 and 19,920.89

Step by Step Solution

1. Step 1: Write the proportion equation
   59,905.24 : 89,848.32 = 19,920.89 : x
2. Step 2: Convert to fraction form
   59,905.24/89,848.32 = 19,920.89/x
3. Step 3: Cross multiply
   59,905.24x = 89,848.32 × 19,920.89
4. Step 4: Simplify right side
   59,905.24x = 1,789,858,649.32
5. Step 5: Solve for x
   x = 1,789,858,649.32/59,905.24
6. Step 6: Final answer
   x = 29,878.17