Finding the Fourth Proportional to 59,978.70, 89,980.83 and 17,858.97

Step by Step Solution

1. Step 1: Write the proportion equation
   59,978.70 : 89,980.83 = 17,858.97 : x
2. Step 2: Convert to fraction form
   59,978.70/89,980.83 = 17,858.97/x
3. Step 3: Cross multiply
   59,978.70x = 89,980.83 × 17,858.97
4. Step 4: Simplify right side
   59,978.70x = 1,606,964,943.55
5. Step 5: Solve for x
   x = 1,606,964,943.55/59,978.70
6. Step 6: Final answer
   x = 26,792.26