Finding the Fourth Proportional to 83,445.89, 125,169.37 and 21,116.39

Step by Step Solution

1. Step 1: Write the proportion equation
   83,445.89 : 125,169.37 = 21,116.39 : x
2. Step 2: Convert to fraction form
   83,445.89/125,169.37 = 21,116.39/x
3. Step 3: Cross multiply
   83,445.89x = 125,169.37 × 21,116.39
4. Step 4: Simplify right side
   83,445.89x = 2,643,124,554.34
5. Step 5: Solve for x
   x = 2,643,124,554.34/83,445.89
6. Step 6: Final answer
   x = 31,674.71