Finding the Fourth Proportional to 35,111.25, 48,478.91 and 21,700.89

Step by Step Solution

1. Step 1: Write the proportion equation
   35,111.25 : 48,478.91 = 21,700.89 : x
2. Step 2: Convert to fraction form
   35,111.25/48,478.91 = 21,700.89/x
3. Step 3: Cross multiply
   35,111.25x = 48,478.91 × 21,700.89
4. Step 4: Simplify right side
   35,111.25x = 1,052,035,384.73
5. Step 5: Solve for x
   x = 1,052,035,384.73/35,111.25
6. Step 6: Final answer
   x = 29,962.91