Finding the Fourth Proportional to 60,610.48, 90,874.71 and 21,146.06

Step by Step Solution

1. Step 1: Write the proportion equation
   60,610.48 : 90,874.71 = 21,146.06 : x
2. Step 2: Convert to fraction form
   60,610.48/90,874.71 = 21,146.06/x
3. Step 3: Cross multiply
   60,610.48x = 90,874.71 × 21,146.06
4. Step 4: Simplify right side
   60,610.48x = 1,921,642,297.33
5. Step 5: Solve for x
   x = 1,921,642,297.33/60,610.48
6. Step 6: Final answer
   x = 31,704.79