Finding the Fourth Proportional to 71,032.50, 106,549.56 and 21,111.30

Step by Step Solution

1. Step 1: Write the proportion equation
   71,032.50 : 106,549.56 = 21,111.30 : x
2. Step 2: Convert to fraction form
   71,032.50/106,549.56 = 21,111.30/x
3. Step 3: Cross multiply
   71,032.50x = 106,549.56 × 21,111.30
4. Step 4: Simplify right side
   71,032.50x = 2,249,399,726.03
5. Step 5: Solve for x
   x = 2,249,399,726.03/71,032.50
6. Step 6: Final answer
   x = 31,667.19