Finding the Fourth Proportional to 59,978.82, 89,971.48 and 15,605.68

Step by Step Solution

1. Step 1: Write the proportion equation
   59,978.82 : 89,971.48 = 15,605.68 : x
2. Step 2: Convert to fraction form
   59,978.82/89,971.48 = 15,605.68/x
3. Step 3: Cross multiply
   59,978.82x = 89,971.48 × 15,605.68
4. Step 4: Simplify right side
   59,978.82x = 1,404,066,126.01
5. Step 5: Solve for x
   x = 1,404,066,126.01/59,978.82
6. Step 6: Final answer
   x = 23,409.37