Finding the Fourth Proportional to 31,052.02, 42,901.89 and 21,662.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,052.02 : 42,901.89 = 21,662.50 : x
2. Step 2: Convert to fraction form
   31,052.02/42,901.89 = 21,662.50/x
3. Step 3: Cross multiply
   31,052.02x = 42,901.89 × 21,662.50
4. Step 4: Simplify right side
   31,052.02x = 929,362,192.13
5. Step 5: Solve for x
   x = 929,362,192.13/31,052.02
6. Step 6: Final answer
   x = 29,929.20