Finding the Fourth Proportional to 31,043.62, 42,837.69 and 21,632.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,043.62 : 42,837.69 = 21,632.50 : x
2. Step 2: Convert to fraction form
   31,043.62/42,837.69 = 21,632.50/x
3. Step 3: Cross multiply
   31,043.62x = 42,837.69 × 21,632.50
4. Step 4: Simplify right side
   31,043.62x = 926,686,328.93
5. Step 5: Solve for x
   x = 926,686,328.93/31,043.62
6. Step 6: Final answer
   x = 29,851.10