Finding the Fourth Proportional to 71,111.18, 106,677.05 and 21,206.59

Step by Step Solution

1. Step 1: Write the proportion equation
   71,111.18 : 106,677.05 = 21,206.59 : x
2. Step 2: Convert to fraction form
   71,111.18/106,677.05 = 21,206.59/x
3. Step 3: Cross multiply
   71,111.18x = 106,677.05 × 21,206.59
4. Step 4: Simplify right side
   71,111.18x = 2,262,256,089.03
5. Step 5: Solve for x
   x = 2,262,256,089.03/71,111.18
6. Step 6: Final answer
   x = 31,812.94